Today is March 12th. It's the 71st day of the year. 294 days remain. It's week 11 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 44 and the normal low is 27. I've calculated the 30-year averages at 46 and 26.
On the warm side, in 1990 the high was the record high of 81 with the record warmest low of 59. Five years later, in 1995, the high was 71 with a low of 41, a 30 degree spread. In 1982 the high was 60 with a low of 36. Three years ago the high was 56 with a low of 40. Other warm highs were 63 two years ago, 60 in 1981, 57 in 1994 and 56 in 1988. 17 of the last 30 highs were: 30s (9) and 40s (8) . On the warmer side, ten highs were: 50s (5), 60s (3), 70s (1) and 80s (1). On the colder side, three highs were 20s.
In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1977 the high was 69 with a low of 43, a bonus 60s day. In 1976 the high was 60 with a low of 32, a bonus 60s day. In 1969 the high was 39 with a low of 11, a cold day. In 1968 the high was 33 with a low of 20, a cold day. In 1967 the high was 38 with a low of 33, a five degree spread. In 1965 the high was 34 with a low of 29, a five degree spread. In 1962 the high was 37 with a low of 33, a four degree spread. In 1960 the high was 33 with a low of 10, yet another cold day.
More recently, we had small spreads of four degrees in 1991 (34/30), six degrees in 1989 (39/33) and seven degrees in 1986 (39/32). The other large spreads were 30 degrees in 1981 (60/30) and 37 degrees two years ago (63/26).
On the cold side, in 1998 the high was 26 with a low of 10. In 1984 the high was 24 with a low of 13. In 1993 the high was 31 with a low of 11. A year earlier, in 1992, the high was 29 with a low of 15. A dozen years later, in 2004, the high was 33 with a low of 16. In 1980 the high was 30 with a low of 19. Another cold low was 15 in 1979. The record low of 1 was set in 1948. The record coldest high of 14 was set way back in 1896. 27 of the last 30 lows were 10s (a.k.a. teens) (10), 20s (7) and 30s (10). On the warmer side, two lows were 40s and one low was in the 50s.
Today is a not a major day in Chicago's snow history.
A word about today's predicted temperatures. Lows in the 10s (a.k.a. teens) as is happening today, occur in sets of back to back years. The last time it happened was in 2004/2005. Then before that in 1998/1999, 1992/1993, 1983/1984 and 1979/1980. So it might be easy to predict it will occur again next year on March 12. A high in the 20s, as is predicted for today, is even more of a rarity. This did not occur at O'Hare until 1984 (24 degrees). Then again in 1992 (29 degrees) and in 1998 (26 degrees).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:42 and sunrise is at 7:10. Sunset is at 18:57 and twilight ends at 19:25. There's a total of 11 hours, 47 minutes of daylight today and 12 hours, 43 minutes between twilights. Tomorrow twilight begins at 6:40 and sunrise is at 7:08. The moon is waning gibbous and was full two days ago (the full Worm moon) at 21:38. Illumination was 98% at midnight, will be 97% at noon and 94% at midnight tonight. Moonset is at 7:31. Moonrise is at 21:11 and moonset is at 7:56 tomorrow. Moonlight time is 10 hours, 20 minutes which is 48 minutes shorter than yesterday.
St. Patrick's Day is in five 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 44 and the normal low is 27. I've calculated the 30-year averages at 46 and 26.
On the warm side, in 1990 the high was the record high of 81 with the record warmest low of 59. Five years later, in 1995, the high was 71 with a low of 41, a 30 degree spread. In 1982 the high was 60 with a low of 36. Three years ago the high was 56 with a low of 40. Other warm highs were 63 two years ago, 60 in 1981, 57 in 1994 and 56 in 1988. 17 of the last 30 highs were: 30s (9) and 40s (8) . On the warmer side, ten highs were: 50s (5), 60s (3), 70s (1) and 80s (1). On the colder side, three highs were 20s.
In looking back through the years to the first March at O'Hare in 1959, the following instances were notable: In 1977 the high was 69 with a low of 43, a bonus 60s day. In 1976 the high was 60 with a low of 32, a bonus 60s day. In 1969 the high was 39 with a low of 11, a cold day. In 1968 the high was 33 with a low of 20, a cold day. In 1967 the high was 38 with a low of 33, a five degree spread. In 1965 the high was 34 with a low of 29, a five degree spread. In 1962 the high was 37 with a low of 33, a four degree spread. In 1960 the high was 33 with a low of 10, yet another cold day.
More recently, we had small spreads of four degrees in 1991 (34/30), six degrees in 1989 (39/33) and seven degrees in 1986 (39/32). The other large spreads were 30 degrees in 1981 (60/30) and 37 degrees two years ago (63/26).
On the cold side, in 1998 the high was 26 with a low of 10. In 1984 the high was 24 with a low of 13. In 1993 the high was 31 with a low of 11. A year earlier, in 1992, the high was 29 with a low of 15. A dozen years later, in 2004, the high was 33 with a low of 16. In 1980 the high was 30 with a low of 19. Another cold low was 15 in 1979. The record low of 1 was set in 1948. The record coldest high of 14 was set way back in 1896. 27 of the last 30 lows were 10s (a.k.a. teens) (10), 20s (7) and 30s (10). On the warmer side, two lows were 40s and one low was in the 50s.
Today is a not a major day in Chicago's snow history.
A word about today's predicted temperatures. Lows in the 10s (a.k.a. teens) as is happening today, occur in sets of back to back years. The last time it happened was in 2004/2005. Then before that in 1998/1999, 1992/1993, 1983/1984 and 1979/1980. So it might be easy to predict it will occur again next year on March 12. A high in the 20s, as is predicted for today, is even more of a rarity. This did not occur at O'Hare until 1984 (24 degrees). Then again in 1992 (29 degrees) and in 1998 (26 degrees).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:42 and sunrise is at 7:10. Sunset is at 18:57 and twilight ends at 19:25. There's a total of 11 hours, 47 minutes of daylight today and 12 hours, 43 minutes between twilights. Tomorrow twilight begins at 6:40 and sunrise is at 7:08. The moon is waning gibbous and was full two days ago (the full Worm moon) at 21:38. Illumination was 98% at midnight, will be 97% at noon and 94% at midnight tonight. Moonset is at 7:31. Moonrise is at 21:11 and moonset is at 7:56 tomorrow. Moonlight time is 10 hours, 20 minutes which is 48 minutes shorter than yesterday.
St. Patrick's Day is in five days. -Bernie-
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