Today is May 24th. It's the 144th day of the year. 221 days remain. It's week 21 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 73 and the normal low is 50. I've calculated the 30-year averages at 70 and 49.
On the warm side, in 1991 the high was 85 with the record warmest low of 68. The former record warmest low of 67 occurred in 1933. Two years earlier, in 1989, the high was 86 with a low of 65. Two years ago the high was 88 with a low of 63. To round out the highs in the 80s, it was 84 in 1997, 80 in 2000 and 80 three years ago. The record high of 93 was last tied in 1950, as it was also 93 in 1921. 19 of the 30 (63%) highs were: 60s (10) and 70s (9). Six highs were in the warmer 80s and five highs were in the cooler: 40s (1) and 50s (4).
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1977 the high was 91 with a low of 64, a hot day. In 1972 the high was 86 with a low of 54, a 32 degree spread. In 1965 the high was 83 with a low of 53, a 30 degree spread. In 1961 the high was 80 with a low of 45, a 35 degree spread.
More recently, there was a small spread of six degrees in 1999 (54/48). There were large spreads of 34 degrees in 1985 (78/44), 32 degrees in 1983 (76/44), 31 degrees in 1997 (84/53) and 31 degrees in 2006 (80/49).
On the cool side, there was one day of a mean of 11.5 or more degrees below normal. That was in 1992 when the high was 46 with the record low of 34. Other cool highs of note were 61 in 1982, 60 in 2001, 57 in 1995, 56 in 1987, 56 in 1996 and 54 in 1999. The record coolest high of 44 occurred back in 1925. 17 of the 30 lows were 40s. One low was in the colder 30s. 12 lows were in the warmer: 50s (9) and 60s (3).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:51 and sunrise was at 5:24. Sunset is at 20:17 and twilight ends at 20:50. Tomorrow twilight begins at 4:50 and sunrise is at 5:23. There's a total of 14 hours, 53 minutes of daylight today and 15 hours, 59 minutes between twilights. The moon is new today at 7:11. Illumination was 0% at midnight, will be 0% at noon and 1% at midnight tonight. Moonrise was at 5:03. Moonset is at 21:07. Moonrise is at 5:59 tomorrow. Moonlight time is 16 hours, 4 minutes which is 30 minutes longer than yesterday.
Memorial Day is tomorrow. -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 73 and the normal low is 50. I've calculated the 30-year averages at 70 and 49.
On the warm side, in 1991 the high was 85 with the record warmest low of 68. The former record warmest low of 67 occurred in 1933. Two years earlier, in 1989, the high was 86 with a low of 65. Two years ago the high was 88 with a low of 63. To round out the highs in the 80s, it was 84 in 1997, 80 in 2000 and 80 three years ago. The record high of 93 was last tied in 1950, as it was also 93 in 1921. 19 of the 30 (63%) highs were: 60s (10) and 70s (9). Six highs were in the warmer 80s and five highs were in the cooler: 40s (1) and 50s (4).
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1977 the high was 91 with a low of 64, a hot day. In 1972 the high was 86 with a low of 54, a 32 degree spread. In 1965 the high was 83 with a low of 53, a 30 degree spread. In 1961 the high was 80 with a low of 45, a 35 degree spread.
More recently, there was a small spread of six degrees in 1999 (54/48). There were large spreads of 34 degrees in 1985 (78/44), 32 degrees in 1983 (76/44), 31 degrees in 1997 (84/53) and 31 degrees in 2006 (80/49).
On the cool side, there was one day of a mean of 11.5 or more degrees below normal. That was in 1992 when the high was 46 with the record low of 34. Other cool highs of note were 61 in 1982, 60 in 2001, 57 in 1995, 56 in 1987, 56 in 1996 and 54 in 1999. The record coolest high of 44 occurred back in 1925. 17 of the 30 lows were 40s. One low was in the colder 30s. 12 lows were in the warmer: 50s (9) and 60s (3).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:51 and sunrise was at 5:24. Sunset is at 20:17 and twilight ends at 20:50. Tomorrow twilight begins at 4:50 and sunrise is at 5:23. There's a total of 14 hours, 53 minutes of daylight today and 15 hours, 59 minutes between twilights. The moon is new today at 7:11. Illumination was 0% at midnight, will be 0% at noon and 1% at midnight tonight. Moonrise was at 5:03. Moonset is at 21:07. Moonrise is at 5:59 tomorrow. Moonlight time is 16 hours, 4 minutes which is 30 minutes longer than yesterday.
Memorial Day is tomorrow. -Bernie-
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