Today is August 9th. It's the 221st day of the year. 144 days remain. It's week 32 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 82 and the normal low is 63. I've calculated the 30-year averages at 83 and 64.
On the hot side, there were no days of a mean of at least 11.5 degrees above normal. There were two highs of 95 (2001, 2005) and two highs of 93 (1984, 1992). The record high of 97 was set back in 1913. The warmest low was 73 in 1988. The record warmest low of 77 occurred in 1934. Over the last 30 years, 15 highs were 80s. Seven highs were in the warmer 90s. Eight highs were in the cooler: 60s (1) and 70s (7).
In looking back through the years to the first August at O'Hare in 1959, the following instances were notable: In 1976 the high was 83 with a low of 51, a 32 degree spread. That low of 51 equals the record low. In 1975 the high was 90. In 1972 the low was 51, a low equal to the record low. In 1971 the high was 93. In 1968 the high was 90. In 1968 the low was 55 two morning's later on the 11th. In 1964 the high was 70 with a low of 45, a cool day. The high on the 7th in 1964 was 92. That's quite a fall to 45.
More recently, there were large spreads of 34 degrees in 1985 (90/56) and 30 degrees in 2005 (95/65). The small spread was seven degrees in 1983 (79/72).
On the cool side, in 1994 the high was 66 with a low of 53. That high was the only one in the 60s. The other mid 50s lows were 54 in 1999, 55 in 1990, 56 in 1982 and 56 in 1985. The record low of 51 was set in 1972. The record coolest high of 64 was set way back in 1884. The official thermometer was located near Lake Michigan at the time. Over the last 30 years, 16 lows were in the 60s. Nine lows were in the cooler 50s and five lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight is at 5:24 and sunrise is at 5:55. Sunset is at 20:02 and twilight ends at 20:33. Tomorrow twilight begins at 5:25 and sunrise is at 5:56. There's a total of 14 hours, 7 minutes of daylight today and 15 hours, 9 minutes between twilights. The moon is waning gibbous. Illumination was 91% at midnight, will be 87% at noon and 84% at midnight tonight. Moonset is at 9:32 this morning. Moonrise is at 21:23 tonight. Moonset is at 10:36 tomorrow morning. Moonlight time is 12 hours, 9 minutes which is 42 minutes longer than yesterday.
My tennis coach, Bob Finder, will be 77 in ten days. Steve Campbell and Christina, a sister of mine, celebrate their seventh anniversary in 11 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 82 and the normal low is 63. I've calculated the 30-year averages at 83 and 64.
On the hot side, there were no days of a mean of at least 11.5 degrees above normal. There were two highs of 95 (2001, 2005) and two highs of 93 (1984, 1992). The record high of 97 was set back in 1913. The warmest low was 73 in 1988. The record warmest low of 77 occurred in 1934. Over the last 30 years, 15 highs were 80s. Seven highs were in the warmer 90s. Eight highs were in the cooler: 60s (1) and 70s (7).
In looking back through the years to the first August at O'Hare in 1959, the following instances were notable: In 1976 the high was 83 with a low of 51, a 32 degree spread. That low of 51 equals the record low. In 1975 the high was 90. In 1972 the low was 51, a low equal to the record low. In 1971 the high was 93. In 1968 the high was 90. In 1968 the low was 55 two morning's later on the 11th. In 1964 the high was 70 with a low of 45, a cool day. The high on the 7th in 1964 was 92. That's quite a fall to 45.
More recently, there were large spreads of 34 degrees in 1985 (90/56) and 30 degrees in 2005 (95/65). The small spread was seven degrees in 1983 (79/72).
On the cool side, in 1994 the high was 66 with a low of 53. That high was the only one in the 60s. The other mid 50s lows were 54 in 1999, 55 in 1990, 56 in 1982 and 56 in 1985. The record low of 51 was set in 1972. The record coolest high of 64 was set way back in 1884. The official thermometer was located near Lake Michigan at the time. Over the last 30 years, 16 lows were in the 60s. Nine lows were in the cooler 50s and five lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight is at 5:24 and sunrise is at 5:55. Sunset is at 20:02 and twilight ends at 20:33. Tomorrow twilight begins at 5:25 and sunrise is at 5:56. There's a total of 14 hours, 7 minutes of daylight today and 15 hours, 9 minutes between twilights. The moon is waning gibbous. Illumination was 91% at midnight, will be 87% at noon and 84% at midnight tonight. Moonset is at 9:32 this morning. Moonrise is at 21:23 tonight. Moonset is at 10:36 tomorrow morning. Moonlight time is 12 hours, 9 minutes which is 42 minutes longer than yesterday.
My tennis coach, Bob Finder, will be 77 in ten days. Steve Campbell and Christina, a sister of mine, celebrate their seventh anniversary in 11 days. -Bernie-
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