Today is March 17th. It's the 76th day of the year. 289 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 47 and the normal low is 29. I've calculated the 30-year averages at 43 and 29.
On the warm side, in 2003 the high was 73 with a low of 40, a 33 degree spread. In 1999 the high was 59 with a low of 41. The record high of 74 and record warmest low of 49 were set on the same day way back in 1894. 25 of the last 30 highs were: 30s (14) and 40s (11). On the warmer side, four highs were: 50s (3) and 70s (1). There have been no highs in the 60s over the past 30 years. The most recent 60s high was in 1969 (see next section). On the colder side, one high was in the 20s.
In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1969 the high was 69 with a low of 36, a 33 degree spread and bonus 60s high. In 1968 the high was 66 with a low of 26, a 40 degree spread and bonus 60s high. In 1967 the high was 25 with a low of 11, a cold day. In 1966 the high was 76 with a low of 43, a 33 degree spread and bonus 70s day. And although this high of 76 beats the record of 74, O'Hare was not the official station of record in 1966. In 1964 the high was 31 with a low of 14, a cold day. In 1960 the high was 30 with a low of 23, a seven degree spread. In 1959 the high was 27 with a low of 15, another cold day.
March 17, 1966 was quite a day. The following are highs and lows at various stations: Springfield: 73/53, Wheaton College: 72/43, DeKalb: 71/43, Marengo: 73/40, Rockford: 73/41, Barrington: 74/44, University of Chicago: 73/45, Chicago in Grant Park near Buckingham Fountain: 73/44, Midway: 73/40. Midway had jumps of five degrees in the back to back hours of 9-10 AM (57 to 62) and 10-11 AM (62 to 67). It's unusual that O'Hare's temperature was higher than Midway's. Perhaps there was a wind component off the lake which held Midway's reading down a bit.
More recently, we had small spreads of five degrees in 1984 (32/27), six degrees in: 1989 (35/29), 1998 (39/33), 2005 (35/29) and seven degrees in 2002 (41/34).
On the cold side, in 1993 the high was 29 with a low of 12. Other cold highs were 32 in 1984 and 35 in three years: 1989, 1996 and 2005. The record low of -1 was set way back in 1900. The record coldest high of 11 was set back in 1941. 25 of the last 30 lows were: 20s (13) and 30s (12). Three lows were in the colder 10s (a.k.a. teens). Two lows were in the warmer 40s.
Today is a not a major day in Chicago's snow history.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:34 and sunrise is at 7:01. Sunset is at 19:02 and twilight ends at 19:30. Tomorrow twilight begins at 6:32 and sunrise is at 7:00. There's a total of 12 hours, 1 minute of daylight today and 12 hours, 56 minutes between twilights. The moon is waning gibbous, heading towards last quarter tomorrow at 12:47. Illumination was 64% at midnight, will be 59% at noon and 55% at midnight tonight. Moonrise was at 1:35. Moonset is at 10:16. Moonrise is at 2:29 tomorrow. Moonlight time is 8 hours, 41 minutes which is 17 minutes shorter than yesterday.
St. Patrick's Day is today. My brother and his wife will celebrate their 21st wedding anniversary in two days. -Bernie-
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 47 and the normal low is 29. I've calculated the 30-year averages at 43 and 29.
On the warm side, in 2003 the high was 73 with a low of 40, a 33 degree spread. In 1999 the high was 59 with a low of 41. The record high of 74 and record warmest low of 49 were set on the same day way back in 1894. 25 of the last 30 highs were: 30s (14) and 40s (11). On the warmer side, four highs were: 50s (3) and 70s (1). There have been no highs in the 60s over the past 30 years. The most recent 60s high was in 1969 (see next section). On the colder side, one high was in the 20s.
In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1969 the high was 69 with a low of 36, a 33 degree spread and bonus 60s high. In 1968 the high was 66 with a low of 26, a 40 degree spread and bonus 60s high. In 1967 the high was 25 with a low of 11, a cold day. In 1966 the high was 76 with a low of 43, a 33 degree spread and bonus 70s day. And although this high of 76 beats the record of 74, O'Hare was not the official station of record in 1966. In 1964 the high was 31 with a low of 14, a cold day. In 1960 the high was 30 with a low of 23, a seven degree spread. In 1959 the high was 27 with a low of 15, another cold day.
March 17, 1966 was quite a day. The following are highs and lows at various stations: Springfield: 73/53, Wheaton College: 72/43, DeKalb: 71/43, Marengo: 73/40, Rockford: 73/41, Barrington: 74/44, University of Chicago: 73/45, Chicago in Grant Park near Buckingham Fountain: 73/44, Midway: 73/40. Midway had jumps of five degrees in the back to back hours of 9-10 AM (57 to 62) and 10-11 AM (62 to 67). It's unusual that O'Hare's temperature was higher than Midway's. Perhaps there was a wind component off the lake which held Midway's reading down a bit.
More recently, we had small spreads of five degrees in 1984 (32/27), six degrees in: 1989 (35/29), 1998 (39/33), 2005 (35/29) and seven degrees in 2002 (41/34).
On the cold side, in 1993 the high was 29 with a low of 12. Other cold highs were 32 in 1984 and 35 in three years: 1989, 1996 and 2005. The record low of -1 was set way back in 1900. The record coldest high of 11 was set back in 1941. 25 of the last 30 lows were: 20s (13) and 30s (12). Three lows were in the colder 10s (a.k.a. teens). Two lows were in the warmer 40s.
Today is a not a major day in Chicago's snow history.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:34 and sunrise is at 7:01. Sunset is at 19:02 and twilight ends at 19:30. Tomorrow twilight begins at 6:32 and sunrise is at 7:00. There's a total of 12 hours, 1 minute of daylight today and 12 hours, 56 minutes between twilights. The moon is waning gibbous, heading towards last quarter tomorrow at 12:47. Illumination was 64% at midnight, will be 59% at noon and 55% at midnight tonight. Moonrise was at 1:35. Moonset is at 10:16. Moonrise is at 2:29 tomorrow. Moonlight time is 8 hours, 41 minutes which is 17 minutes shorter than yesterday.
St. Patrick's Day is today. My brother and his wife will celebrate their 21st wedding anniversary in two days. -Bernie-
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