Tuesday, November 17, 2009

November 9: ORD

Today is November 9th. It's the 313th day of the year. 52 days remain. It's week 45 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 50 and the normal low is 35. I've calculated the 31-year averages at 51 and 35.


On the warm side, in 1999 the high was the record high of 74 with the record warmest low of 59. Three years later, in 2002, the high was 63 with a low of 53. Four years later, in 2006, the high was 68 with a low of 47. In 1984 the high was 62 with a low of 49. A year earlier, in 1983, the high was 62 with a low of 46. In 2005 the high was 66 with a low of 41. Other warm highs were 63 in 1978 and 62 in 1980.
14 of the last 31 highs have been 40s. 14 highs were in the warmer: 50s (6), 60s (7) and 70s (1). Three highs were in the cooler 30s.

In looking back through the years to the first November at O'Hare in 1958, the following instances were notable: in 1977 the high was a warm 66 degrees. In 1975 the high was 68 with a low of 52, a warm day. In 1973 the high was 34 with a low of 20. In 1972 the high was 45 with a low of 41, a four degree spread. In 1971 the high was 40 with a low of 34, a six degree spread. In 1970 the low was a warm 49 degrees. In 1969 the high was 48 with a low of 41, a seven degree spread. In 1966 the high was 63 with a low of 48, a warm day. In 1964 the high was 71 with a low of 45, a warm day. In 1960 the low was a cool 23 degrees.


More recently, there was a
large spreads of 31 degrees in 1995 (48/17). There were small spreads of four degrees in 1982 (46/42), five degrees in 1997 (45/40), six degrees in 1990 (40/34) and six degrees in 2000 (42/36).

On the cool side, in 1991 the high was 37 with the record low of 14. Five years earlier, in 1986, the high was 39 with a low of 21. In 2003 the high was 41 with a low of 20. Other cool lows were 17 in 1995 and 24 in 1993. 27 of the last 31 lows were: 20s (8), 30s (8) and 40s (11). Two lows were in the cooler 10s. Two lows were in the warmer 50s.

The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:xx and sunrise is at 6:xx. Sunset is at 16:xx and twilight ends at 17:xx. Tomorrow twilight begins at 6:xx and sunrise is at 6:xx. There's a total of 10 hours, x minutes of daylight today (xxxx minutes less than yesterday) and 11 hours, x minutes between twilights. The moon is xxxxxxxx, heading towards xxxxx xxxxxx tomorrow. Illumination was xx% at midnight, will be xx% at noon and xx% at midnight tonight. Moonset is at 12:16. Moonrise is at 22:30. Moonlight time is xx hours, xx minutes which is xx minutes shorter than yesterday.

Veterans Day is in two days. My sister-in-law, Sharon, celebrates a birthday in five days. -Bernie-

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