Thursday, September 27, 2012
September 27: ORD
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. Before this, the official site of record was on the south side of Chicago at Midway International Airport (MDW), beginning on Wednesday, July 1, 1942. From Friday, January 1, 1926 through Tuesday, June 30, 1942, the official site was at the University of Chicago. Before this, the official site was at various locations in Chicago going back to Monday, October 16, 1871. Observations taken from October 15, 1870 to October 8, 1871 were lost in the Great Chicago Fire.
According to the National Climatic Data Center (NCDC), the normal high is 70 and the normal low is 49. I've calculated the 33-year averages at 71 and 50.
On the warm side, in 1986 (O'Hare's second warmest September 27th) the high was 86 (along with 1971 and 1998, O'Hare's second hottest high of the date) with a low of 68 (O'Hare's second warmest low of the date). A year later, in 1987, the high was 89 (O'Hare's hottest high of the date) with a low of 61. In 1998 the high was 86 (along with 1971 and 1986, O'Hare's second hottest high of the date) with a low of 60. The record high of 91 and record warmest low of 71 were set on the same hot day in 1971 at Midway. 29 of the past 33 highs (88%) were in the: 60s (13), 70s (8) and 80s (8). Four highs were in the cool 50s. Our most recent 50s highs were 53 degrees in 1993 and 58 degrees in 1994. For an ongoing 17 consecutive years, from 1995 through 2011, highs were in the 60s, 70s and 80s. 14 of these 17 (82%) featured highs of at least 65 degrees. The exceptions were highs of 61 degrees in 2003, 62 degrees in 2001 and 63 degrees last year, in 2011. O'Hare's warmest September 27th was in 1971 as the high was 86 (along with 1986 and 1998, O'Hare's second hottest high of the date) with a low of 69 (O'Hare's warmest low of the date). O'Hare's other warm highs of 9/27 are 85 degrees in 1963, 84 degrees in 1990 and 83 degrees in 1979. Another warm low of 63 degrees occurred in 1973.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1975 the high was 70 with a low of 40, a 30 degree spread. In 1973 the high was 80 with a warm low of 63, a warm day. In 1971 the high was 86 with a low of 69, a hot day. 1971 was also the year of the warm records. In 1967 the high was a cool 55 degrees. In 1964 the high was 61 with a cold low of 35, a cool day. In 1963 the high was a warm 85 with a low of 52, a 33 degree spread. In 1961 the high was 71 with a low of 40, a 31 degree spread.
More recently, there were large spreads of 37 degrees in 1990 (84/47), 31 degrees in 1985 (68/37), 31 degrees in 2004 (76/45) and 30 degrees in 1983 (79/49). There were small spreads of seven degrees in 1993 (53/46) and 1994 (58/51).
On the cool side, in 1984 (O'Hare's coolest September 27th) the high was the near-record coolest high of 50 (O'Hare's coolest high of the date) with a low of 36 (O'Hare's third coldest low of the date). In 1991 (O'Hare's second coolest September 27th) the high was 58 with a low of 34 (O'Hare's coldest low of the date and our most recent 30s low). The other cool highs are 53 degrees in 1993 (O'Hare's second coolest high of the date), 55 degrees in 1967 (O'Hare's third coolest high of the date) and 58 degrees in 1994. The other cold lows are 37 degrees in 1985 and 1989. The record low of 31 degrees and record coolest high of 49 degrees were set on the same cold day in 1942 at Midway. 25 of the last 33 lows (76%) were in the: 40s (14) and 50s (11). For an ongoing 13 consecutive years, from 1999 through 2011, lows were in the 40s and 50s. O'Hare also recorded consecutive 40s and 50s lows as follows: ten from 1974 through 1983 and six from 1992 through 1997. Four lows (12%) were in the cold 30s. Four lows (12%) were in the warm 60s. Our most recent 60s low was 60 degrees in 1998. A great battle between 30s and 60s lows began in 1984. In 1984 and 1985, the 30s won as 36 and 37 degrees. Then from 1986 through 1988, the 60s took over as 68, 61 and 60 degrees. Then in 1989, a low of 37 occurred. The 30s returned in 1991 as 34 degrees. But more recently, in 1998, a low of 60 occurred. The score over the past 33 years is now tied at four a piece! O'Hare's third coolest September 27th was in 1964 as the high was 61 with a low of 35 (O'Hare's second coldest low of the date).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:19 and sunrise is at 6:47. Sunset is at 18:41 and twilight ends at 19:09. There's a total of 11 hours, 54 minutes of daylight today and 12 hours, 50 minutes between twilights. We lost four minutes of daylight from yesterday. Tomorrow twilight begins at 6:20 and sunrise is at 6:48. The moon is waxing gibbous, heading towards the full Harvest moon in two days at 22:19. Illumination was 91% at midnight, will be 94% at noon and 96% at midnight tonight. Moonset was at 4:14 this morning. Moonrise is at 17:14 this afternoon. Moonset is at 5:18 tomorrow morning. Moonlight time is 11 hours which is 37 minutes longer than yesterday.
Warm Fall began September 22nd and runs for 41 days through November 1st. High temperatures in this period are usually in the 50s, 60s and 70s. Highs in the 30s and 40s occur infrequently. Columbus Day is in 11 days. Standard Time doesn't return until November 4th.
Tuesday, September 27, 2011
September 27: ORD
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 70 and the normal low is 49. I've calculated the 32-year averages at 71 and 50.
On the warm side, in 1986 the high was 86 with a low of 68. A year later, in 1987, the high was 89 with a low of 61. In 1998 the high was 86 with a low of 60. Other warm highs were 84 in 1990 and 83 in 1979. The record high of 91 and record warmest low of 71 were set on the same hot day in 1971. 28 of the past 32 highs (88%) were in the: 60s (12), 70s (8) and 80s (8). Four highs were in the cool 50s. For an ongoing 16 straight years, since 1995, highs were in the 60s, 70s and 80s. 14 of these 16 years (88%) featured highs of at least 65 degrees. The exceptions were 61 in 2003 and 62 in 2001.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1975 the high was 70 with a low of 40, a 30 degree spread. In 1973 the high was 80 with a warm low of 63, a warm day. In 1971 the high was 86 with a low of 69, a hot day. 1971 was also the year of the warm records. In 1967 the high was a cool 55 degrees. In 1964 the high was 61 with a cold low of 35, a cool day. In 1963 the high was a warm 85 with a low of 52, a 33 degree spread. In 1961 the high was 71 with a low of 40, a 31 degree spread.
More recently, there were large spreads of 37 degrees in 1990 (84/47), 31 degrees in 1985 (68/37), 31 degrees in 2004 (76/45) and 30 degrees in 1983 (79/49). There were small spreads of seven degrees in 1993 (53/46) and 1994 (58/51).
On the cool side, in 1984 the high was the near-record coolest high of 50 (the record is 49, set in 1942) with a low of 36. In 1991 the high was 58 with a low of 34 (our most recent 30s low). Other cool highs were 53 in 1993 and 58 in 1994 (our most recent 50s high). Other cool lows were 37 in both 1985 and 1989. The record low of 31 was set in 1942. 24 of the last 32 lows (75%) were in the: 40s (14) and 50s (10). For an ongoing 12 consecutive years, since 1999, lows were in the 40s & 50s. Four lows were in the cold 30s and four were in the warm 60s. Our most recent 60s low was 60 in 1998. A great battle between 30s & 60s lows began in 1984. In 1984 & 1985, the 30s won as 36 and 37 degrees. Then from 1986 through 1988, the 60s took over as 68, 61 and 60 degrees. Then in 1989, a low of 37 occurred. The 30s returned in 1991 as 34 degrees. But more recently, in 1998, a low of 60 occurred. The score is now tied at 4 a piece!
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:18 and sunrise is at 6:46. Sunset is at 18:42 and twilight ends at 19:10. There's a total of 11 hours, 56 minutes of daylight today and 12 hours, 52 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 6:19 and sunrise is at 6:47. The moon is new today at 6:09. Illumination was 0% at midnight, will be 0% at noon and 1% at midnight tonight. Moonrise is at 7:02 this morning. Moonset is at 18:30 this afternoon. Moonrise is at 8:21 tomorrow morning. Moonlight time is 11 hours, 28 minutes which is 45 minutes shorter than yesterday.
Warm Fall began September 22 and runs for 41 days through November 1. High temperatures in this period are usually in the 50s, 60s and 70s. Highs in the 30s and 40s occur infrequently. Columbus Day is in 13 days.
Monday, September 27, 2010
September 27: ORD
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 70 and the normal low is 49. I've calculated the 31-year averages at 72 and 50.
On the warm side, in 1986 the high was 86 with a low of 68. The year later, 1987, the high was 89 with a low of 61. In 1998 the high was 86 with a low of 60. Other warm highs were 84 in 1990 and 83 in 1979. The record high of 91 and record warmest low of 71 were set on the same day in 1971. Over the last 31 years, 27 highs (87%) were: 60s (11) and 70s (8) and 80s (8). Four highs were in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1975 the high was 70 with a low of 40, a 30 degree spread. In 1973 the high was 80 with a low of 63, a warm day. In 1971 the high was 86 with a low of 69, a hot day. In 1967 the high was a cool 55. In 1964 the high was 61 with a low of 35, a cool day. In 1963 the high was a warm 85 with a low of 52, a 33 degree spread. In 1961 the high was 71 with a low of 40, a 31 degree spread. The last sub-60 degree high occurred 16 years ago in 1994 (58 degrees).
More recently, there were large spreads of 37 degrees in 1990 (84/47), 31 degrees in 1985 (68/37), 31 degrees in 2004 (76/45) and 30 degrees in 1983 (79/49). There were small spreads of seven degrees in 1993 (53/46) and 1994 (58/51).
On the cool side, in 1984 the high was the near-record coolest high of 50 (the record is 49, set in 1942) with a low of 36. In 1991 the high was 58 with a low of 34. Other cool highs were 53 in 1993 and 58 in 1994. Other cool lows were 37 in both 1985 and 1989. There have been no lows below 45 for the last 18 years (since 34 degrees in 1991). The record low of 31 was set in 1942. 23 of the last 31 lows (74%) were: 40s (13) and 50s (10). Four lows were in the cooler 30s and four lows were in the warmer 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:18 and sunrise is at 6:46. Sunset is at 18:42 and twilight ends at 19:10. There's a total of 11 hours, 56 minutes of daylight today and 12 hours, 52 minutes between twilights. We are losing two or three minutes of daylight a day. Tomorrow twilight begins at 6:19 and sunrise is at 6:47. The moon is waning gibbous. Illumination was 86% at midnight, will be 83% at noon and 79% at midnight tonight. Moonset is at 11:10 this morning. Moonrise is at 20:36 tonight. Moonset is at 12:12 tomorrow afternoon. Moonlight time is 14 hours, 34 minutes which is 26 minutes longer than yesterday.
Columbus Day is in 14 days. -Bernie-
Monday, September 28, 2009
September 27: ORD
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 70 and the normal low is 49. I've calculated the 30-year averages at 71 and 50.
On the warm side, in 1986 the high was 86 with a low of 68. In 1987 the high was 89 with a low of 61. In 1998 the high was 86 with a low of 60. Other warm highs were 84 in 1990 and 83 in 1979. The record high of 91 and record warmest low of 71 were set on the same day in 1971. Over the last 30 years, 26 highs were: 60s (11) and 70s (7) and 80s (8). Four highs were in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1975 the high was 70 with a low of 40, a 30 degree spread. In 1973 the high was 80 with a low of 63, a warm day. In 1971 the high was 86 with a low of 69, a hot day. In 1967 the high was a cool 55. In 1964 the high was 61 with a low of 35, a cool day. In 1963 the high was a warm 85 with a low of 52, a 33 degree spread. In 1961 the high was 71 with a low of 40, a 31 degree spread.
More recently, there were large spreads of 37 degrees in 1990 (84/47), 31 degrees in 1985 (68/37), 31 degrees in 2004 (76/45) and 30 degrees in 1983 (79/49). There were small spreads of seven degrees in 1993 (53/46) and 1994 (58/51).
On the cool side, in 1984 the high was the near-record coolest high of 50 (the record is 49, set in 1942) with a low of 36. In 1991 the high was 58 with a low of 34. Other cool highs were 53 in 1993 and 58 in 1994. Other cool lows were 37 in both 1985 and 1989. There have been no lows below 45 for 17 years running (since 34 degrees in 1991). The record low of 31 was set in 1942. 22 of the last 30 lows were: 40s (13) and 50s (9). Four lows were in the cooler 30s and four lows were in the warmer 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:18 and sunrise is at 6:46. Sunset is at 18:41 and twilight ends at 19:09. Tomorrow twilight begins at 6:19 and sunrise is at 6:47. There's a total of 11 hours, 55 minutes of daylight today (three minutes less than yesterday) and 12 hours, 51 minutes between twilights. The moon is waxing gibbous, having just reached first quarter two nights ago at 23:50. Illumination was 60% at midnight, will be 65% at noon and 69% at midnight tonight. Moonset was at a minute past midnight. Moonrise is at 15:32. Moonset is at 1:02 tomorrow morning. Moonlight time is 8 hours, 29 minutes which is 35 minutes shorter than yesterday.
Columbus Day is in 15 days. My parents will celebrate their 47th wedding anniversary in 16 days. National Boss Day is in 19 days. -Bernie-
Sunday, September 28, 2008
September 27: ORD
Today is September 27th. It's the 271st day of the year. 95 days remain. It's week 39 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. Observations have been official at O'Hare since Thursday, January 17, 1980.
According to the National Climatic Data Center (NCDC), the normal high is 70 and the normal low is 49. The 29-year averages are 71 and 50.
On the warm side, in 1986 the high was 86 with a low of 68. In 1987 the high was 89 with a low of 61. In 1998 the high was 86 with a low of 60. In 1979 the high was 83 with a low of 59. In 1988 the high was 81 with a low of 60. Other warm highs were 84 in 1990 and 81 in 1995. Another warm low was 58 in 1999. The record high of 91 and record warmest low of 71 were both set in 1971. 25 of the 29 highs have been in the 60s (11), 70s (7) and 80s (7). Just four highs have been in the 50s.
The largest spread of 37 degrees happened in 1990 as the high was 84 with a low of 47. The spread was 31 degrees in both 1985 (68/37) and 2004 (76/45). The spread was 30 degrees in 1983 as the high was 79 with a low of 49.
On the cool side, in 1984 the high was the near record coolest of 50 (the record is 49 set in 1942) with a low of 36. In 1991 the high was 58 with a low of 34. Other cool highs were 53 in 1993 and 58 in 1994. Other cool lows were 37 in both 1985 and 1989. The record coolest high of 49 was set in 1942. There have been no lows below 45 for 16 years running (since 34 in 1991). 21 of the last 29 lows have been 40s (13) and 50s (8).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:19 and sunrise is at 6:46. Sunset is at 18:41 and twilight ends at 19:09. Twilight begins tomorrow at 6:20 and sunrise is at 6:48. There's a total of 11 hours, 55 minutes of daylight today and 12 hours, 50 minutes between twilights. The moon is waning crescent. Illumination was 5% at midnight, will be 3% at noon and 1% at midnight tonight. Moonrise was at 4:55 this morning. Moonset is at 17:45 this afternoon and moonrise is at 6:04 tomorrow morning. Moonlight time is 12 hours, 50 minutes today. The autumnal equinox was five days ago at 10:44.
The following events are all 16 days away on October 13th: Columbus Day, my parents' 46th wedding anniversary and a brother-in-law, Buddy, will be turning 33. -Bernie-
