Today is September 28th. It's the 271st day of the year. 94 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. 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 69 and the normal low is 49. I've calculated the 30-year averages at 69 and 49.
On the warm side, in 1986 the high was 82 with the only 60s low of 65. Other warm highs were 83 in 1979, 82 in 1987, 81 in 1983 and 81 in 1995. There have been no 80s highs since 1995. The record high of 92 was set in 1953 and the record warmest low of 71 occurred in 1971. Over the last 30 years, the following is the distribution of highs: 50s (6), 60s (11), 70s (8) and 80s (5). The last decade has been a microcosm of the day: three in the 50s, three in the 70s and four in the 60s.
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 73 with a low of 40, a 33 degree spread. In 1973 the low was a warm 64 degrees. In 1971 the high was 89 with a low of 73, a hot day. In 1967 the high was a cool 53 with a low of 41. In 1964 the high was 62 with a low of 32, a 30 degree spread and cool day. In 1963 the high was a warm 87 with a low of 53, a 34 degree spread. In 1961 the high was 56 with a low of 33, a cool day. In 1959 the high was 77 with a low of 64, a warm day.
More recently, there were large spreads of 32 degrees in 1979 (83/51), 32 degrees in 1989 (74/42) and 31 degrees in 1985 (76/45). There were small spreads of four degrees in 2001 (56/52) and seven degrees in 1988 (65/58).
On the cool side, in 1984 the high was 56 with a low of 36. Another cool high was 56 in 2001. Another cool low was 36 in 1991. The record low of 29 was set in 1942. The record coolest high of 50 was set way back in 1893. 26 of the last 30 lows were: 40s (10) and 50s (16). Three lows were in the cooler 30s and one was in the warmer 60s.
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 18:40 and twilight ends at 19:08. Tomorrow twilight begins at 6:20 and sunrise is at 6:48. There's a total of 11 hours, 53 minutes of daylight today (two minutes less than yesterday) and 12 hours, 49 minutes between twilights. The moon is waxing gibbous. Illumination was 69% at midnight, will be 73% at noon and 77% at midnight tonight. Moonset was at 1:02. Moonrise is at 16:02. Moonset is at 2:05 tomorrow morning. Moonlight time is 9 hours which is 31 minutes longer than yesterday.
Columbus Day is in two weeks. My parents will celebrate their 47th wedding anniversary in 15 days. A brother-in-law, Buddy, celebrates a birthday in 15 days. National Boss Day is in 18 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 69 and the normal low is 49. I've calculated the 30-year averages at 69 and 49.
On the warm side, in 1986 the high was 82 with the only 60s low of 65. Other warm highs were 83 in 1979, 82 in 1987, 81 in 1983 and 81 in 1995. There have been no 80s highs since 1995. The record high of 92 was set in 1953 and the record warmest low of 71 occurred in 1971. Over the last 30 years, the following is the distribution of highs: 50s (6), 60s (11), 70s (8) and 80s (5). The last decade has been a microcosm of the day: three in the 50s, three in the 70s and four in the 60s.
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 73 with a low of 40, a 33 degree spread. In 1973 the low was a warm 64 degrees. In 1971 the high was 89 with a low of 73, a hot day. In 1967 the high was a cool 53 with a low of 41. In 1964 the high was 62 with a low of 32, a 30 degree spread and cool day. In 1963 the high was a warm 87 with a low of 53, a 34 degree spread. In 1961 the high was 56 with a low of 33, a cool day. In 1959 the high was 77 with a low of 64, a warm day.
More recently, there were large spreads of 32 degrees in 1979 (83/51), 32 degrees in 1989 (74/42) and 31 degrees in 1985 (76/45). There were small spreads of four degrees in 2001 (56/52) and seven degrees in 1988 (65/58).
On the cool side, in 1984 the high was 56 with a low of 36. Another cool high was 56 in 2001. Another cool low was 36 in 1991. The record low of 29 was set in 1942. The record coolest high of 50 was set way back in 1893. 26 of the last 30 lows were: 40s (10) and 50s (16). Three lows were in the cooler 30s and one was in the warmer 60s.
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 18:40 and twilight ends at 19:08. Tomorrow twilight begins at 6:20 and sunrise is at 6:48. There's a total of 11 hours, 53 minutes of daylight today (two minutes less than yesterday) and 12 hours, 49 minutes between twilights. The moon is waxing gibbous. Illumination was 69% at midnight, will be 73% at noon and 77% at midnight tonight. Moonset was at 1:02. Moonrise is at 16:02. Moonset is at 2:05 tomorrow morning. Moonlight time is 9 hours which is 31 minutes longer than yesterday.
Columbus Day is in two weeks. My parents will celebrate their 47th wedding anniversary in 15 days. A brother-in-law, Buddy, celebrates a birthday in 15 days. National Boss Day is in 18 days. -Bernie-
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