Saturday, March 12, 2011

March 12: ORD

Today is March 12th. It's the 71st day of the year. 294 days remain. It's week 11 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 44 and the normal low is 27. I've calculated the 32-year averages at 45 and 26.


On the warm side, in 1990 the high was the record high of 81 with the record warmest low of 59. Five years later, in 1995, the high was 71 with a low of 41, a 30 degree spread. In 1982 the high was 60 with a low of 36. In 2006 the high was 56 with a low of 40. Last year, in 2010, the high was 55 with a low of 40. Other warm highs were 63 in 2007, 60 in 1981, 57 in 1994 and 56 in 1988.
23 of the last 32 highs (72%) were in the: 30s (9), 40s (8) and 50s (6) . On the warmer side, five highs were in the: 60s (3), 70s (1) and 80s (1). On the cold side, four highs were in the 20s. Today is the mode date (or most frequent date) for our first high in the 60s based upon the past 32 years.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1977 the high was 69 with a low of 43, a warm day. In 1976 the high was a warm 60 degrees. In 1969 the low was a cold 11 degrees. In 1967 the high was 38 with a low of 33, a five degree spread. In 1966 the low was a warm 40 degrees. In 1965 the high was 34 with a low of 29, a five degree spread. In 1962 the high was 37 with a low of 33, a four degree spread. In 1960 the high was 33 with a cold low of 10, a cold day.

More recently, we had small spreads of four degrees in 1991 (34/30), six degrees in 1989 (39/33) and seven degrees in 1986 (39/32). The other large spreads were 30 degrees in 1981 (60/30) and 37 degrees in 2007 (63/26).

On the cold side, in 1998 the high was 26 with a low of 10. In 1984 the high was 24 with a low of 13. Two years ago, in 2009, the high was 26 with a low of 14. In 1993 the high was 31 with a low of 11. A year earlier, in 1992, the high was 29 with a low of 15. In 2004 the high was 33 with a low of 16. In 1980 the high was 30 with a low of 19. Another cold low was 15 in 1979. The record low of 1 was set in 1948. The record coldest high of 14 occurred way back in 1896. 28 of the last 32 lows (88%) were in the: 10s (a.k.a. teens) (11), 20s (7) and 30s (10). Our most recent 30s low was 30 in 2001. On the warmer side, three lows were in the 40s and one was in the 50s (the record warmest low of 59 in 1990).

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:43 and sunrise is at 6:11. Sunset is at 17:56 and twilight ends at 18:24. There's a total of 11 hours, 45 minutes of daylight today and 12 hours, 41 minutes between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 6:41 and sunrise is at 7:09. The moon is waxing crescent and reaches first quarter today at 17:45. Illumination was 43% at midnight, will be 48% at noon and 53% at midnight tonight. Moonset was at 0:54 early this morning. Moonrise is at 10:07 this morning. Moonset is at 2:48 tomorrow morning. Moonlight time is 14 hours, 47 minutes which is five minutes longer than yesterday.

St. Patrick's Day is in five days. The cool part of Spring (Cool Spring) begins today. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Friday, March 11, 2011

March 11: ORD

Today is March 11th. It's the 70th day of the year. 295 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 44 and the normal low is 27. I've calculated the 32-year averages at 43 and 25.


On the warm side, in 1990 the high was the record high of 74 with a low of 42, a 32 degree spread. In 2006 the high was 67 with a low of 43. Last year, in 2010, the high was 60 with a low of 44. In 1995 the high was 62 with a low of 40. Other warm highs were 60 in 1988 and 59 a year later in 1989.
The record warmest low of 55 occurred way back in 1902. 20 of the last 32 highs (63%) were in the: 30s (10) and 40s (10) . On the warmer side, eight highs (25%) were in the: 50s (3), 60s (4) and 70s (1). On the cold side, four highs (12%) were in the 20s.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was 39 with a low of 33, a six degree spread. In 1977 the high was 68 with a low of 50, a warm day. In 1975 the high was 35 with a low of 28, a seven degree spread. In 1974 the high was 41 with a low of 36, a five degree spread. In 1973 the high was 65 with a low of 44, a warm day. In 1972 the high was a warm 70 with a low of 33, a spread of 37 degrees and a warm day. In 1969 the high was 31 with a low of 11, a cold day. In 1967 the high was 39 with a low of 33, a six degree spread. In 1966 the high was 57 with a low of 46, a warm day. In 1965 the high was a cold 32 degrees. In 1963 the high was 36 with a low of 29, a seven degree spread. In 1962 the high was 39 with a low of 32, a seven degree spread. In 1960 the high was a cold 25 with a low of 20, a five degree spread and cold day.

More recently, we had no other small or large spreads.

On the cold side, in 1979 the high was 27 with a low of 4. In 1998 the high was 22 with a low of 13. In 1984 the high was 25 with a low of 12. In 1992 the high was 29 with a low of 11. In 1980 the high was 31 with a low of 13. Another cold high was 31 in 1993. The record low of 3 was set at Midway in 1979. The record coldest high of 20 occurred in 1948. 15 of the last 32 lows (47%) were in the 20s. On the cold side, eight lows (25%) were in the: single digits (1) and 10s (a.k.a. teens) (7). On the warmer side, nine lows (28%) were in the: 30s (5) and 40s (4).

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:45 and sunrise is at 6:12. Sunset is at 17:55 and twilight ends at 18:23. There's a total of 11 hours, 43 minutes of daylight today and 12 hours, 38 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:43 and sunrise is at 6:11. The moon is waxing crescent and will reach first quarter tomorrow at 17:45. Illumination was 33% at midnight, will be 38% at noon and 43% at midnight tonight. Moonrise is at 9:18 this morning. Moonset is at 0:54 early tomorrow morning. Moonrise is at 10:07 tomorrow morning. Moonlight time is 14 hours, 42 minutes which is 39 minutes shorter than yesterday.

St. Patrick's Day is in six days. The cool part of Spring (Cool Spring) begins tomorrow. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Thursday, March 10, 2011

March 10: ORD

Today is March 10th. It's the 69th day of the year. 296 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 44 and the normal low is 27. I've calculated the 32-year averages at 42 and 24.


On the warm side, last year (in 2010) the high was 62 with a low of 46. That low of 46 was our first 40s low of the past 32 years. In 1990 the high was 62 with a low of 39. Five years before that, in 1985, the high was 64 with a low of 32, a 32 degree spread. Two years ago, in 2009, the high was 61 with a low of 33. Other warm highs were 58 in 1986 and 57 in 1997.
The highs are fairly evenly distributed. About half of them, 17 of the 32 or 53% were in the: 40s (5), 50s (8) and 60s (4). On the cold side, 15 of the 32 (47%) were in the: 20s (6) and 30s (9). Highs were in the 60s the past two years. Highs were in the 20s in 2002 and 2003, our most recent 20s highs.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1977 the high was 67 with a low of 41, a warm day. In 1974 the high was 42 with a low of 35, a seven degree spread. In 1973 the high was 62 with a low of 39, a warm day. In 1972 the low was a cold 15 degrees. In 1970 the high was a cold 31 degrees. In 1967 the high was a warm 60 with a low of 37, a warm day. In 1966 the high was 56 with a low of 39, a warm day. In 1965 the high was a cold 30 degrees. In 1962 the high was 36 with a low of 32, a four degree spread. In 1961 the low was a cold 15 degrees. In 1960 the high was a cold 30 degrees.

More recently, we had a small spread of six degrees in 1983 (30/24). There was another large spread of 32 degrees in 2001 (50/18).

On the cold side, in 2003 the high was 20 with the record low of 2. The former record low of 5 occurred way back in 1892. In 1979 the high was 22 with a low of 9. Five years later, in 1984, the high was 28 with a low of 6. In 1998 the high was 23 with a low of 13. Six years earlier, in 1992, the high was 24 with a low of 15. A decade later, in 2002, the high was 28 with a low of 14. Other cold highs were 30 in both 1983 and 1987. Another cold low was 14 in 1996. 22 of the last 32 lows (69%) were in the: 20s (12) and 30s (10). On the cold side, nine lows (28%) were in the: single digits (3) and 10s (a.k.a. teens) (6). The most recent cold days occurred in the back to back years of 2002 (28/14) and 2003 (20/2). One low (last year's 46) was in the warmer 40s which represents just 3% of the lows.

Today is a major day in Chicago's snow history. In 1999, 1.0 inches fell. This was the sixth of six days in which a total of 18.2 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:46 and sunrise is at 6:14. Sunset is at 17:54 and twilight ends at 18:22. There's a total of 11 hours, 40 minutes of daylight today and 12 hours, 36 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:45 and sunrise is at 6:12. The moon is waxing crescent. Illumination was 24% at midnight, will be 28% at noon and 33% at midnight tonight. Moonrise is at 8:36 this morning. Moonset is at 23:57 tonight. Moonrise is at 9:18 tomorrow morning. Moonlight time is 15 hours, 21 minutes which is 25 minutes longer than yesterday. Moonlight time is at it's peak today.

St. Patrick's Day is in seven days. The cool part of Spring (Cool Spring) begins in two days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Wednesday, March 9, 2011

March 9: ORD

Today is March 9th. It's the 68th day of the year. 297 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 43 and the normal low is 26. I've calculated the 32-year averages at 42 and 23.


On the warm side, in 1986 the high was 62 with a low of 38. Two decades later, in 2006, the high was 58 with a low of 38. Other warm highs were 63 in both 1992 and 2000, 62 in 2002 and 56 in 2007. Another warm low was 39 in 1990. 13
of the last 32 highs (41%) were in the 30s . On the warmer side, 15 highs (47%) were in the: 40s (6), 50s (5) and 60s (4). On the cold side, four highs (12%) were in the: 10s (a.k.a. teens) (1) and 20s (3).

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was 37 with a low of 9, a cold day. In 1977 the high was 68 with a low of 50, a warm day. In 1975 the high was 32 with a low of 15, a cold day. In 1974 the high was 68 with a low of 39, a warm day and year of the record high. In 1973 the high was 40 with a low of 37, a three degree spread. In 1968 the high was 51 with a warm low of 42, a warm day. In 1964 the high was 36 with a low of 32, a four degree spread. In 1962 the high was 36 with a low of 33, a three degree spread. In 1960 the high was a cold 25 with a low of 22, a three degree spread. In 1959 the high was 32 with a low of 28, a four degree spread.

More recently, we had a small spread of four degrees in 1999 (31/27). There were three days of large spreads: 35 degrees in 2000 (63/28), 40 degrees in 1992 (63/23) and 41 degrees in 2002 (62/21).

On the cold side, in 2003 the high was the record coldest high of 13 with a low of 6, a seven degree spread. The former record coldest high of 17 occurred in 1932. In 1984 the high was 25 with the record low of 5. The record low of 5 originally occurred in 1932. So March 9, 1932 was a very cold day. In 1982 the high was 27 with a low of 7. In 1996 the high was 26 with a low of 9. Another cold low was 13 in 1995. Other cold highs were 30 in 2005 and 31 in 1999. 19 of the last 32 lows (59%) were in the 20s. On the cold side, seven lows (22%) were in the: single digits (4) and 10s (a.k.a. teens) (3). Six lows (19%) were in the warmer 30s.

Today is a major day in Chicago's snow history. In 1999, 5 inches fell. This was the fifth of six days in which a total of 18.2 inches fell. In 1998, 10.9 inches fell at Midway and 7 inches fell at O'Hare. The 1998 storm occurred during the morning rush hour. O'Hare was shut down from 6:30 to 10:30 A.M. Hundreds of cars and trucks were stuck in the snow on highways in Indiana. 325,000 customers were without electricity around the Chicago area and in Northwest Indiana.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:48 and sunrise is at 6:16. Sunset is at 17:53 and twilight ends at 18:21. There's a total of 11 hours, 37 minutes of daylight today and 12 hours, 33 minutes between twilights. We gained four minutes of daylight from yesterday. Tomorrow twilight begins at 5:46 and sunrise is at 6:14. The moon is waxing crescent. Illumination was 17% at midnight, will be 20% at noon and 24% at midnight tonight. Moonrise is at 8:01 this morning. Moonset is at 22:57 tonight. Moonrise is at 8:36 tomorrow morning. Moonlight time is 14 hours, 56 minutes which is 32 minutes longer than yesterday.

Ash Wednesday is today. St. Patrick's Day is in eight days. The cool part of Spring (Cool Spring) begins in three days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Tuesday, March 8, 2011

March 8: ORD

Today is March 8th. It's the 67th day of the year. 298 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 42 and the normal low is 26. I've calculated the 32-year averages at 43 and 26.


On the warm side, in 2000 the high was the record high of 78 with the record warmest low of 56. In 1987 the high was the former record high of 73 with a low of 36, a 37 degree spread. In 1992 the high was 63 with a low of 43. A decade later, in 2002, the high was 64 with a low of 37. In 1988 the high was 55 with a low of 39. In 2006 the high was 53 with a low of 39. 20
of the last 32 highs (63%) were in the: 30s (9) and 40s (11). On the warmer side, seven highs were in the: 50s (3), 60s (2) and 70s (2). On the cold side, five highs were in the: 20s (4) and 10s (a.k.a. teens) (1).

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1977 the high was a warm 70 with a low of 35, a 35 degree spread and warm day. In 1974 the high was 48 with a warm low of 41, a seven degree spread. In 1973 the high was a warm 54 degrees. In 1972 the high was a cold 27 with a low of 16, a cold day. In 1967 the high was 26 with a low of 7, a cold day. In 1964 the high was 39 with a low of 32, a seven degree spread. In 1962 the high was 36 with a low of 30, a six degree spread. In 1960 the high was 29 with a low of 8, a cold day.

More recently, we had a small spread of three degrees in 1998 (39/36).

On the cold side, in 1996 the high was 15 with a low of 1. In 1982 the high was 29 with a low of -1, a 30 degree spread. A couple years later, in 1984, the high was 24 with a low of 9. Three years ago, in 2008, the high was 25 with a low of 14. Other cold lows were 12 in 1986, 13 in 2003 and 13 in 2007. Other cold highs were 29 in 1995, 30 in 1999 and 30 in 2005 (our most recent 30s high). The record low of -7 was set in 1943 and the record coldest high of 10 occurred in 1932. 27 of the last 32 lows (84%) were in the: 10s (a.k.a. teens) (9), 20s (7) and 30s (11). Our most recent 20s low was 29 in 2004. Three lows were in the cold: single digits (2) and negative single digits (1). Two lows were in the warmer: 40s (1) and 50s (1).

Today is a major day in Chicago's snow history. In 1999, 4.0 inches fell. This was the fourth of six days in which a total of 18.2 inches fell. Two years ago today (in 2009) 1.67 inches of rain fell. This broke the old record of 1.41 inches set in 1990.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:50 and sunrise is at 6:18. Sunset is at 17:51 and twilight ends at 18:19. There's a total of 11 hours, 33 minutes of daylight today and 12 hours, 29 minutes between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 5:48 and sunrise is at 6:16. The moon is waxing crescent. Illumination was 10% at midnight, will be 13% at noon and 17% at midnight tonight. Moonrise is at 7:32 this morning. Moonset is at 21:56 tonight. Moonrise is at 8:01 tomorrow morning. Moonlight time is 14 hours, 24 minutes which is 33 minutes longer than yesterday.

Mardi Gras is today. Ash Wednesday is tomorrow. St. Patrick's Day is in nine days. The cool part of Spring (Cool Spring) begins in four days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

March 7: ORD

Today is March 7th. It's the 66th day of the year. 299 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 42 and the normal low is 26. I've calculated the 32-year averages at 40 and 25.


On the warm side, in 2000 the high was the record high of 78 with the record warmest low of 53. In 1987 the high was the former record high of 74 with a low of 45. In 1983 the high was 60 with a low of 44. In 1992 the high was 51 with a low of 44, a seven degree spread. Other warm highs were 57 in both 1988 and 2005. Another warm low was 39 two years ago in 2009. 24
of the last 32 highs (75%) were in the: 20s (6), 30s (9) and 40s (9) . Our most recent 30s high was 35 in 2003. On the warmer side, six highs were in the: 50s (3), 60s (1) and 70s (2). On the cold side, two highs were in the 10s (a.k.a. teens).

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was a cold 30 with a low of 25, a five degree spread. In 1975 the high was 38 with a low of 31, a seven degree spread. In 1974 the high was 52 with a warm low of 40, a warm day. In 1973 the high was 62 with a low of 44, a warm day. In 1971 the high was a cold 30 degrees. In 1968 the high was a warm 54 with a low of 19, a 35 degree spread. In 1967 the high was a cold 30 with a low of 15, a cold day. In 1965 the high was 34 with a low of 30, a four degree spread. In 1960 the high was 24 with a low of 3, a cold day.

More recently, we had small spreads of four degrees in 1979 (37/33), five degrees in 2002 (38/33), six degrees two years ago (in 2009) (45/39) and seven degrees in 2007 (28/21). The large spreads were 30 degrees in 1997 (49/19) and 30 degrees in 2005 (57/27).

On the cold side, in 1996 the high was 17 with a low of 5. A decade earlier, in 1986, the high was 18 with a low of 7. Four years before that, in 1982, the high was 20 with a low of 6. Two years later, in 1984, the high was 25 with a low of 11. Three years ago, in 2008, the high was 26 with a low of 14. In 1999 the high was 26 with a low of 15. A decade before that, in 1989, the high was 28 with a low of 17. Another cold high was 28 four years ago in 2007. The record low of -2 and record coldest high of 14 were set on the same cold day in 1943. 13 of the last 32 lows (41%) were in the 20s. Nine lows ( 28%) were in the cold: 10s (a.k.a. teens) (6) and single digits (3). Ten lows (31%) were in the warmer: 30s (6), 40s (3) and 50s (1).

Today is a major day in Chicago's snow history. In 1999, 2.8 inches fell. This was the third of six days in which a total of 18.2 inches fell. Back in 1931 at the University of Chicago, where official stats for Chicago used to be kept, 10.9 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:51 and sunrise is at 6:19. Sunset is at 17:50 and twilight ends at 18:18. There's a total of 11 hours, 31 minutes of daylight today and 12 hours, 27 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:50 and sunrise is at 6:18. The moon is waxing crescent. Illumination was 5% at midnight, will be 7% at noon and 10% at midnight tonight. Moonrise is at 7:05 this morning. Moonset is at 20:56 tonight. Moonrise is at 7:32 tomorrow morning. Moonlight time is 13 hours, 51 minutes which is 37 minutes longer than yesterday.

Mardi Gras is tomorrow. Ash Wednesday is in two days. St. Patrick's Day is in ten days. The cool part of Spring (Cool Spring) begins in five days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Monday, March 7, 2011

March 6: ORD

Today is March 6th. It's the 65th day of the year. 300 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 42 and the normal low is 25. I've calculated the 32-year averages at 42 and 25.


On the warm side, in 1983 the high was the co-record high of 70 with the record warmest low of 53. In 1992 the high was 62 with a low of 47. Two years ago, in 2009, the high was 65 with a low of 39. In 2000 the high was the co-record high of 70 with a low of 32, a 38 degree spread. Five years later, in 2005, the high was 64 with a low of 35. In 1994 the high was 58 with a low of 39. In 1987 the high was 67 with a low of 29, a 38 degree spread. Another warm low was 37 in 2004. 14
of the last 32 highs (44%) were in the 30s. On the warmer side, 13 highs (41%) were in the: 40s (4), 50s (3), 60s (4) and 70s (2). On the cold side, five highs (16%) were in the 20s.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1974 the high was 59 with a low of 42, a warm day. In 1973 the high was 64 with a low of 39, another warm day. In 1972 the high was 49 with a cold low of 12, a 37 degree spread. In 1969 the high was 39 with a low of 32, a seven degree spread. In 1966 the high was a cold 27 with a low of 21, a six degree spread. In 1965 the high was 33 with a low of 31, a two degree spread. In 1964 the high was a warm 55 with a low of 22, a 33 degree spread. In 1960 the high was 20 with a low of -1, year of the record low of 2 and a very cold day.

More recently, we had small spreads of four degrees in 1995 (35/31) and six degrees in 1990 (32/26). Another large spread was 30 degrees in 1988 (51/21).

On the cold side, in 1982 the high was 24 with a low of 4. Two years earlier, in 1980, the high was 28 with a low of 6. In 2003 the high was 28 with a low of 11. Four years later, in 2007, the high was 24 with a low of 16. In 1996 the high was 30 with a low of 11. In 1984 the high was 27 with a low of 14. Other cold highs were 30 in both 1989 and a decade later in 1999. The record low of 2 was set in 1960 and the record coldest high of 15 was set back in 1932. 16 of the last 32 lows (50%) were in the 20s. Eight lows were in the cold: 10s (a.k.a. teens) (6) and single digits (2). Eight lows (25%) were in the warmer: 30s (6), 40s (1) and 50s (1).

Today is a major day in Chicago's snow history. In 1999, 1.6 inches fell. This was the second of six days in which a total of 18.2 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:53 and sunrise is at 6:21. Sunset is at 17:49 and twilight ends at 18:17. There's a total of 11 hours, 28 minutes of daylight today and 12 hours, 24 minutes between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 5:51 and sunrise is at 6:19. The moon passed new two afternoons ago at 14:46 and is waxing crescent. Illumination was 2% at midnight, will be 3% at noon and 5% at midnight tonight. Moonrise is at 6:42 this morning. Moonset is at 19:56 tonight. Moonrise is at 7:05 tomorrow morning. Moonlight time is 13 hours, 14 minutes which is 36 minutes longer than yesterday.

Mardi Gras is in two days. Ash Wednesday is in three days. The cool part of Spring (Cool Spring) begins in six days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Saturday, March 5, 2011

March 5: ORD

Today is March 5th. It's the 64th day of the year. 301 days remain. It's week 10 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 41 and the normal low is 25. I've calculated the 32-year averages at 42 and 27.


On the warm side, in 1983 the high was the record high of 75 with the record warmest low of 56. In 1992 the high was 63 with a low of 43. In 2000 the high was 69 with a low of 34, a 35 degree spread. A couple of years ago, in 2009, the high was 65 with a low of 36. Five years before, in 2004, the high was 61 with a low of 39. Another warm low was 37 in 1987. 16
of the last 32 highs (50%) were in the 30s. On the warmer side, 12 highs (38%) were in the: 40s (4), 50s (3), 60s (4) and 70s (1). On the cold side, four highs (12%) were in the 20s.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was 23 with a low of -3, a cold day and year of the record low (0 at Midway). In 1977 the high was 38 with a low of 31, a seven degree spread. In 1976 the high was a warm 55 degrees. In 1974 the high was a warm 57 with a low of 35, a warm day. In 1973 the low was a warm 37 degrees. In 1972 the high was 22 with a low of 7, a cold day. In 1968 the high was a warm 55 degrees. In 1967 the high was 35 with a low of 29, a six degree spread. In 1963 the high was 34 with a low of 32, a mere two degree spread. In 1962 the high was a cold 26 with a low of 19, a seven degree spread. In 1960 the high was 20 with a low of 0, a cold day.

More recently, we had small spreads of three degrees in 1979 (32/29), four degrees in 1996 (33/29), six degrees in 1990 (36/30), six degrees in 2005 (41/35), seven degrees in 1995 (38/31) and seven degrees in 1998 (39/32).

On the cold side, in 1982 the high was 34 with a low of 7. In 2003 the high was 24 with a low of 19, a five degree spread. Another cold low was 12 in 2002. Other cold highs were 27 in 1989, 28 in 2001 and 29 in 1985. The record low of 0 was set in 1978 which tied the original record of 0, set way back in 1873. The record coldest high of 12 occurred way back in 1901. 29 of the last 32 lows (91%) were in the: 10s (a.k.a. teens) (8), 20s (12) and 30s (9). One low was in the cold single digits. Two lows were in the warmer: 40s (1) and 50s (1).

Today is a major day in Chicago's snow history. In 1999, 3.8 inches fell. This was the first of six days in which a total of 18.2 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:54 and sunrise is at 6:22. Sunset is at 17:48 and twilight ends at 18:16. There's a total of 11 hours, 26 minutes of daylight today and 12 hours, 22 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:53 and sunrise is at 6:21. The moon passed new yesterday afternoon at 14:46 and is waxing crescent. Illumination was 0% at midnight, will be 1% at noon and 2% at midnight tonight. Moonrise is at 6:19 this morning. Moonset is at 18:57 tonight. Moonrise is at 6:42 tomorrow morning. Moonlight time is 12 hours, 38 minutes which is 37 minutes longer than yesterday.

Mardi Gras is in three days. Ash Wednesday is in four days. The cool part of Spring (Cool Spring) begins in seven days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Friday, March 4, 2011

March 4: ORD

Today is March 4th. It's the 63rd day of the year. 302 days remain. It's week 9 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 41 and the normal low is 25. I've calculated the 32-year averages at 42 and 25.


On the warm side, in 1983 the high was the record high of 73 with the record warmest low of 50. In 1992 the high was 64 with a low of 35. In 2000 the high was 62 with a low of 29, a 33 degree spread. Another warm low was 38 in 2004. 26
of the last 32 highs (81%) were in the: 30s (12) and 40s (14). On the warmer side, four highs were in the: 50s (1), 60s (2) and 70s (1). On the cold side, two highs were in the: 20s (1) and 10s (a.k.a. teens) (1). High temperatures were in the 30s or 40s the last eight years.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was 18 with a low of 3, a cold day. In 1976 the high was a warm 53 degrees. In 1975 the low was a cold 13 degrees. In 1974 the low was a warm 39 degrees. In 1973 the low was a warm 37 degrees. In 1970 the high was a warm 55 degrees. In 1968 the high was a warm 60 with a low of 27, a 33 degree spread. In 1967 the high was 32 with a low of 26, a six degree spread. In 1966 the high was a warm 53 degrees. In 1963 the high was 38 with a low of 33, a five degree spread. In 1962 the high was a cold 29 degrees. In 1961 the high was 54 with a low of 37, a warm day. In 1960 the high was 19 with a low of 7, a cold day.

More recently, we had small spreads of three degrees in 1993 (36/33), five degrees in 1981 (37/32) and six degrees in 2004 (44/38).

On the cold side, in 2002 the high was 19 with a low of -7. In 2007 the high was 31 with a low of 14. In 1982 the high was 27 with a low of 18. Another cold low was 10 in 1996. The record low of -12 was set way back in 1873. The record coldest high of 17 occurred way back in 1890. 19 of the last 32 lows (59%) were in the 20s. Five lows (16%) were in the cold: negative single digits (1) and 10s (a.k.a. teens) (4). Eight lows (25%) were in the warmer: 30s (7) and 50s (1). There have been no lows as cold as the negative single digits or the much warmer 40s.

Today is a major day in Chicago's snow history. In 2002, 0.3 inches fell. This was the fourth of four days in which a total of 10.2 inches fell. This comprised 91% of the month's total of 11.2 inches. In 1982, 8.5 inches fell. This was the third of three days in which 12.1 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:56 and sunrise is at 6:24. Sunset is at 17:47 and twilight ends at 18:15. There's a total of 11 hours, 23 minutes of daylight today and 12 hours, 19 minutes between twilights. We gained four minutes of daylight from yesterday. Tomorrow twilight begins at 5:54 and sunrise is at 6:22. The moon is new this afternoon at 14:46. Illumination was 1% at midnight, will be 0% at noon and 0% at midnight tonight. Moonrise is at 5:57 this morning. Moonset is at 17:58 this afternoon. Moonrise is at 6:19 tomorrow morning. Moonlight time is 12 hours, 1 minute which is 37 minutes longer than yesterday.

Mardi Gras is in four days. Ash Wednesday is in five days. The cool part of Spring (Cool Spring) begins in eight days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Thursday, March 3, 2011

March 3: ORD

Today is March 3rd. It's the 62nd day of the year. 303 days remain. It's week 9 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 41 and the normal low is 24. I've calculated the 32-year averages at 38 and 22.


On the warm side, in 1983 the high was 73 with a low of 37, a 36 degree spread. In 2004 the high was 47 (our most recent 40s high) with a low of 38. Another warm high was 56 three years ago in 2008. Another warm low was 36 in 1992. The record high of 80 was set in 1974 and the record warmest low of 48 occurred way back in 1880. 26
of the last 32 highs (81%) were in the: 30s (17) and 40s (9). On the warmer side, one high was in the 50s and one high was in the 70s. Remarkably, there have been no highs in the 60s at O'Hare on this date ever. On the cold side, four highs were in the 20s.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was a cold 22 with a low of 14, a cold day. In 1977 the high was 46 with a warm low of 39, a seven degree spread. In 1974 the high was 76 with a low of 42, a 34 degree spread, a warm day and also the day of the record high. In 1973 the high was 55 with a low of 46, a warm day. In 1971 the high was a cold 29 degrees. In 1970 the high was 55 with a low of 40, a warm day. In 1968 the high was 46 with a cold low of 10, a 36 degree spread. In 1966 the high was 58 with a low of 44, a warm day. In 1964 the low was a warm 38 degrees. In 1961 the high was a warm 57 degrees. In 1960 the high was 23 with a low of 8, a cold day.

More recently, we had small spreads of four degrees in 1992 (40/36), seven degrees on three days: 1985 (36/29), 1998 (37/30) and 2007 (27/20). There was one large spread of 32 degrees three years ago in 2008 (56/24).

On the cold side, in 2002 the high was 21 with a low of 0. In 1996 the high was 25 with a low of 1. In 2003 the high was 31 with a low of 8. In 1980 the high was 35 with a low of 8. Another cold low was 12 in 1995. Other cold highs were 27 in 1982 and 27 in 2007. The record low of -6 and the record coldest high of 8 were set on the same cold day way back in 1873. 15 of the last 32 lows (47%) were in the 20s. 11 lows (34%) were in the cold: single digits (4) and 10s (a.k.a. teens) (7). Six lows (19%) were in the warmer 30s.

Today is a major day in Chicago's snow history. In 2002, 0.8 inches fell. This was the third of four days in which a total of 10.2 inches fell. This comprised 91% of the month's total of 11.2 inches. In 1982, 0.1 inches fell. This was the second of three days in which 12.1 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:58 and sunrise is at 6:26. Sunset is at 17:45 and twilight ends at 18:14. There's a total of 11 hours, 19 minutes of daylight today and 12 hours, 16 minutes between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 5:56 and sunrise is at 6:24. The moon is waning crescent and will be new tomorrow at 14:46. Illumination was 2% at midnight, will be 1% at noon and 1% at midnight tonight. Moonrise is at 5:34 this morning. Moonset is at 16:58 this afternoon. Moonrise is at 5:57 tomorrow morning. Moonlight time is 11 hours, 24 minutes which is 34 minutes longer than yesterday.

Mardi Gras is in five days. Ash Wednesday is in six days. The cool part of Spring (Cool Spring) begins in nine days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Wednesday, March 2, 2011

March 2: ORD

Today is March 2nd. It's the 61st day of the year. 304 days remain. It's week 9 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 41 and the normal low is 24. I've calculated the 32-year averages at 39 and 23.


On the warm side, in 1983 the high was 65 with a low of 30, a 35 degree spread. In 1992 the high was 58 with a low of 32. Three years ago, in 2008, the high was 57 with a low of 32. Four years before that, in 2004, the high was 48 with a low of 39. The record high of 71 was set in 1974 and the record warmest low of 44 occurred the prior year, in 1973. 21
of the last 32 highs (66%) were in the: 30s (11) and 40s (10). Our most recent 40s high was 48 in 2004. On the warmer side, four highs were in the 50s and one was a 60. On the cold side, six highs were in the 20s. Today is the median date for our first 60s high of the year based upon the last 32 years. A synonym for median is middle.

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was 25 with a low of 10, a cold day. In 1976 the high was 43 with a warm low of 38, a five degree spread. In 1974 the high was 68 with a low of 45, a warm day and year of the record high of 71 (at Midway). In 1973 the high was 52 with a warm low of 41, a warm day and year of the record warmest low of 44 (at Midway). In 1972 the high was 21 with a low of 11, a cold day. In 1970 the high was 43 with a warm low of 36, a seven degree spread. In 1966 the high was a warm 58 with a low of 28, a 30 degree spread. In 1962 the high was 22 with a low of 10, a cold day. In 1961 the high was a warm 63 with a low of 30, a 33 degree spread and warm day. In 1960 the high was 27 with a low of 12, a cold day.

More recently, we had small spreads of six degrees in 1979 (37/31) and seven degrees in 2007 (32/25).

On the cold side, in 1980 the high was 21 with a low of -1. In 1996 the high was 28 with a low of 2. The year earlier, 1995, the high was 28 with a low of 7. Two years ago, in 2009, the high was 22 with a low of 14. Four years prior, in 2005, the high was 27 with a low of 13. Another cold high was 27 in 1989. Other cold lows were 10 in 2003 and 11 in 1994. The record low of -4 was set in 1913 and the record coldest high of 10 occurred three decades later in 1943. 22 of the last 32 lows (69%) were in the: 20s (13) and 30s (9). Ten lows were in the cold: 10s (a.k.a. teens) (7), single digits (2) and negative single digits (1).

Today is a major day in Chicago's snow history. In 2002, 7.1 inches fell. This was the second of four days in which a total of 10.2 inches fell. This was 91% of the month's total of 11.2 inches. In 1982, 3.5 inches fell. This was the first of three days in which 12.1 inches fell. In 1954 at Midway, 11.5 inches fell. In 1948 at Rockford, 13.0 inches fell.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:59 and sunrise is at 6:27. Sunset is at 17:44 and twilight ends at 18:12. There's a total of 11 hours, 17 minutes of daylight today and 12 hours, 13 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:58 and sunrise is at 6:26. The moon is waning crescent. Illumination was 6% at midnight, will be 4% at noon and 2% at midnight tonight. Moonrise is at 5:08 this morning. Moonset is at 15:58 this afternoon. Moonrise is at 5:34 tomorrow morning. Moonlight time is 10 hours, 50 minutes which is 34 minutes longer than yesterday.

Mardi Gras is in six days. Ash Wednesday is in seven days. The cool part of Spring (Cool Spring) begins in ten days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-

Tuesday, March 1, 2011

March 1: ORD

Today is March 1st. It's the 60th day of the year. 305 days remain. It's week 9 of the year.

Unless noted, the following data is based upon observations collected by the National Weather Service, Chicago, at O'Hare International Airport (ORD) between November 1978 and last year. ORD has been the official site of record for Chicago since Thursday, January 17, 1980.


According to the National Climatic Data Center (NCDC), the normal high is 41 and the normal low is 24. I've calculated the 32-year averages at 41 and 26.


On the warm side, in 1992 the high was the record high of 71 with a low of 38, a 33-degree spread. In 2004 the high was 62 with the co-record warmest low of 45. In 1991 the high was 51 with the co-record warmest low of 45, a six degree spread. In 2000 the high was 56 with a low of 36. Three years earlier, in 1997, the high was 55 with a low of 33. Another warm high was 56 in 1983. 20
of the last 32 highs (62%) were in the: 30s (11) and 40s (9). On the warmer side, five highs were in the 50s, one was a 60 and one was a 70. On the cold side, four highs were in the 20s (most recently 22 in 2009) and one was in the 10s (a.k.a. teens) (19 in 1980).

In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1978 the high was a cold 28 degrees. In 1976 the high was 40 with a low of 35, a five degree spread. In 1975 the high was a cold 28 degrees. In 1973 the low was a warm 37 degrees. In 1972 the high was a warm 57 with a low of 19, a 38 degree spread. In 1970 the high was 38 with a low of 32, a six degree spread. In 1968 the high was 51 with a low of 15, a 36 degree spread. In 1967 the high was 35 with a cold low of 3, a 32 degree spread and cold day. In 1965 the high was 58 with a low of 39, a warm day. In 1963 the high was 34 with a cold low of 3, a 31 degree spread and cold day. In 1962 the high was 17 with a low of -8, a cold day and year of the record low of -5. In 1960 the high was 23 with a low of 0, another cold day.

More recently, we had small spreads of four degrees in 1981 (35/31) and six degrees in 1998 (38/32). The lone large spread was 33 degrees in 1983 (56/23).

On the cold side, in 1980 the high was 19 with a low of 8. In 1995 the high was 23 with a low of 10. In 1989 the high was 23 with a low of 11. Two decades later (two years ago), in 2009, the high was 22 with a low of 14. Another cold high was 27 in 2005. The record low of -5 was set in 1962 and the record coldest high of 14 occurred way back in 1890. 23 of the last 32 lows (72%) were in the: 20s (11) and 30s (12). Seven lows were in the cold: 10s (a.k.a. teens) (6) and single digits (1). Two lows were in the warmer 40s (the co-record warmest lows of 45 in 1991 and 2004).

Today is a major day in Chicago's snow history. In 2002, 2.0 inches fell. This was the first of four days in which a total of 10.2 inches fell. This was 91% of the month's total of 11.2 inches.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:01 and sunrise is at 6:29. Sunset is at 17:43 and twilight ends at 18:11. There's a total of 11 hours, 14 minutes of daylight today and 12 hours, 10 minutes between twilights. We gained three minutes of daylight from yesterday. Tomorrow twilight begins at 5:59 and sunrise is at 6:27. The moon is waning crescent. Illumination was 12% at midnight, will be 9% at noon and 6% at midnight tonight. Moonrise is at 4:40 this morning. Moonset is at 14:56 this afternoon. Moonrise is at 5:08 tomorrow morning. Moonlight time is 10 hours, 16 minutes which is 29 minutes longer than yesterday.

Mardi Gras is in seven days. Ash Wednesday is in eight days. The cool part of Spring (Cool Spring) begins in 11 days on March 12. Cool Spring runs for 32 days, through April 12. High temperatures in this period are usually in the 30s, 40s and 50s. Warmer 60s and 70s occur infrequently. -Bernie-