Today is August 17th. It's the 229th day of the year. 136 days remain. It's week 33 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 82 and 62.
On the hot side, in 1988 the high was the record high of 98 with a low of 77. There were two other highs in the 90s: 94 in 1983 and 93 in 1995. There were three other 70s lows: 72 in 1995, 71 in 2003 and 70 in 1990. The record warmest low of 78 occurred back in 1972. Over the last 30 years, 26 highs were: 70s (11) and 80s (15). Three highs were in the warmer 90s.
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 80 with a low of 47, a 33 degree spread. That low of 47 was cooler than the record low. In 1972 the high was 92 with a low of 77. In 1966 the high was 88 with a low of 57, a 31 degree spread. In 1963 the high was 69 with a low of 46, a cool day. That low of 46 is cooler than the record low. In 1962 the high was 81 with a low of 51, a 30 degree spread.
More recently, there was a small spread of four degrees in 1990 (74/70).
On the cool side, there were no days of a mean of at least 11.5 degrees below normal. The coolest lows were 49 in 1992 and 51 in 1981. The record low of 48 was set in 1976. The coolest high was 73 in 1981. The record coolest high of 66 was set back in 1924. The official thermometer was located near Lake Michigan at the time. Over the last 30 years, 16 lows were 60s. Nine lows were in the cooler: 40s (1) and 50s (8). Four lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight was at 5:33 and sunrise was at 6:03. Sunset is at 19:51 and twilight ends at 20:21. Tomorrow twilight begins at 5:34 and sunrise is at 6:04. There's a total of 13 hours, 48 minutes of daylight today and 14 hours, 48 minutes between twilights. The moon is waning crescent. Illumination was 14% at midnight, will be 10% at noon and 7% at midnight tonight. Moonrise was at 2:21 this morning. Moonset is at 18:06 this evening. Moonrise is at 3:40 tomorrow morning. Moonlight time is 15 hours, 45 minutes which is 24 minutes shorter than yesterday.
My tennis coach, Bob Finder, will be 77 in two days. Steve Campbell and Christina, a sister of mine, celebrate their seventh anniversary in three 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 82 and 62.
On the hot side, in 1988 the high was the record high of 98 with a low of 77. There were two other highs in the 90s: 94 in 1983 and 93 in 1995. There were three other 70s lows: 72 in 1995, 71 in 2003 and 70 in 1990. The record warmest low of 78 occurred back in 1972. Over the last 30 years, 26 highs were: 70s (11) and 80s (15). Three highs were in the warmer 90s.
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 80 with a low of 47, a 33 degree spread. That low of 47 was cooler than the record low. In 1972 the high was 92 with a low of 77. In 1966 the high was 88 with a low of 57, a 31 degree spread. In 1963 the high was 69 with a low of 46, a cool day. That low of 46 is cooler than the record low. In 1962 the high was 81 with a low of 51, a 30 degree spread.
More recently, there was a small spread of four degrees in 1990 (74/70).
On the cool side, there were no days of a mean of at least 11.5 degrees below normal. The coolest lows were 49 in 1992 and 51 in 1981. The record low of 48 was set in 1976. The coolest high was 73 in 1981. The record coolest high of 66 was set back in 1924. The official thermometer was located near Lake Michigan at the time. Over the last 30 years, 16 lows were 60s. Nine lows were in the cooler: 40s (1) and 50s (8). Four lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight was at 5:33 and sunrise was at 6:03. Sunset is at 19:51 and twilight ends at 20:21. Tomorrow twilight begins at 5:34 and sunrise is at 6:04. There's a total of 13 hours, 48 minutes of daylight today and 14 hours, 48 minutes between twilights. The moon is waning crescent. Illumination was 14% at midnight, will be 10% at noon and 7% at midnight tonight. Moonrise was at 2:21 this morning. Moonset is at 18:06 this evening. Moonrise is at 3:40 tomorrow morning. Moonlight time is 15 hours, 45 minutes which is 24 minutes shorter than yesterday.
My tennis coach, Bob Finder, will be 77 in two days. Steve Campbell and Christina, a sister of mine, celebrate their seventh anniversary in three days. -Bernie-
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