Today is July 27th. It's the 208th day of the year. 157 days remain. It's week 30 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 84 and the normal low is 64. I've calculated the 32-year averages at 84 and 64.
On the hot side, in 1989 the high was 93 with a low of 73, our warmest low. In 1997 the high was 92 with a low of 72. The other 90s highs were 93 in 1988, 92 in 1983 and 90 in 1995. Note that in the back-to-back years of 1988 and 1989, the high was our warmest 93 degrees. The record high of 100 was set back in 1916 and tied in 1955. The record warmest low of 82 occurred back in 1916. 19 of the past 32 highs (59%) were in the 80s. Five highs (16%) were in the hot 90s. Eight highs (25%) were in the cool: 60s (1) and 70s (7). There is an ongoing, sub-90 degree string of high temperatures, from 1998 to 2010 (the past 13 years).
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1977 the low was a cool 52 degrees. In 1972 the high was a cool 71 degrees. In 1964 the high was 89 with a low of 59, a 30 degree spread. In 1962 the low was a cool 51 degrees.
More recently, there was a small spread of six degrees in 1981 (69/63). The large spreads were 35 degrees in 1985 (87/52), 33 degrees in 1979 (89/56) and 33 degrees in 1988 (93/60).
On the cool side, in 1984 the high was 74 with a low of 55. In 2005 the high was 74 with a low of 56. The record low of 52 was set in 1985 and the record coolest high of 69 occurred in 1981. Another cool high of 74 occurred in 1980. 17 of the last 32 lows (53%) were in the 60s. Nine lows (28%) were in the cool 50s. Six lows (19%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:09 and sunrise is at 5:41. Sunset is at 20:18 and twilight ends at 20:50. There's a total of 14 hours, 37 minutes of daylight today and 15 hours, 41 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:10 and sunrise is at 5:42. The moon is waning crescent, heading towards new in three days. Illumination was 14% at midnight, will be 11% at noon and 8% at midnight tonight. Moonrise is at 2:21 this morning. Moonset is at 17:56 this afternoon. Moonrise is at 3:21 tomorrow morning. Moonlight time is 15 hours, 35 minutes which is 2 minutes longer than yesterday. Moonlight time is at it's peak today.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Labor Day is in 40 days.
Wednesday, July 27, 2011
Tuesday, July 26, 2011
July 26: ORD
Today is July 26th. It's the 207th day of the year. 158 days remain. It's week 30 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 84 and the normal low is 64. I've calculated the 32-year averages at 83 and 65.
On the hot side, in 1997 the high was 97 (our most recent 90s high) with a low of 73. In 1982 the high was 91 with a low of 73. Our only other 90s high was 90 in 1987. The record high of 99 was set in 1955. The record warmest low of 80 occurred back in 1916. 22 of the past 32 highs (69%) were in the 80s. Three highs (9%) were in the hot 90s. Seven highs (22%) were in the cool: 60s (1) and 70s (6). There have been two significant stretches of sub-90 degree highs. The first was nine years from 1988 to 1996 and the second is still ongoing, 13 years from 1998 to 2010.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1972 the high was a cool 70 with a low of 63, a seven degree spread. In 1962 the high was 75 with a cold low of 49, a cool day.
More recently, there was a small spread of five degrees in 1981 (71/66).
On the cool side, in 1984 the high was 67 (our only 60s high) with a low of 55. In 1991 the high was 78 with the record low of 53. The record low of 53 was originally set in 1962. Another cool low was 54 in 1994. Another cool high was 71 in 1981. The record coolest high of 66 occurred way back in 1891. 18 of the last 32 lows (56%) were in the 60s. Seven lows (22%) were in the cool 50s. Another seven lows (22%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:08 and sunrise is at 5:40. Sunset is at 20:19 and twilight ends at 20:51. There's a total of 14 hours, 39 minutes of daylight today and 15 hours, 43 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:09 and sunrise is at 5:41. The moon is waning crescent, having reached last quarter three days ago at 0:02. Illumination was 22% at midnight, will be 18% at noon and 14% at midnight tonight. Moonrise is at 1:31 this morning. Moonset is at 17:04 this afternoon. Moonrise is at 2:21 tomorrow morning. Moonlight time is 15 hours, 33 minutes which is 13 minutes longer than yesterday. Moonlight time is two minutes short of peaking.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Labor Day is in 41 days.
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 84 and the normal low is 64. I've calculated the 32-year averages at 83 and 65.
On the hot side, in 1997 the high was 97 (our most recent 90s high) with a low of 73. In 1982 the high was 91 with a low of 73. Our only other 90s high was 90 in 1987. The record high of 99 was set in 1955. The record warmest low of 80 occurred back in 1916. 22 of the past 32 highs (69%) were in the 80s. Three highs (9%) were in the hot 90s. Seven highs (22%) were in the cool: 60s (1) and 70s (6). There have been two significant stretches of sub-90 degree highs. The first was nine years from 1988 to 1996 and the second is still ongoing, 13 years from 1998 to 2010.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1972 the high was a cool 70 with a low of 63, a seven degree spread. In 1962 the high was 75 with a cold low of 49, a cool day.
More recently, there was a small spread of five degrees in 1981 (71/66).
On the cool side, in 1984 the high was 67 (our only 60s high) with a low of 55. In 1991 the high was 78 with the record low of 53. The record low of 53 was originally set in 1962. Another cool low was 54 in 1994. Another cool high was 71 in 1981. The record coolest high of 66 occurred way back in 1891. 18 of the last 32 lows (56%) were in the 60s. Seven lows (22%) were in the cool 50s. Another seven lows (22%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:08 and sunrise is at 5:40. Sunset is at 20:19 and twilight ends at 20:51. There's a total of 14 hours, 39 minutes of daylight today and 15 hours, 43 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:09 and sunrise is at 5:41. The moon is waning crescent, having reached last quarter three days ago at 0:02. Illumination was 22% at midnight, will be 18% at noon and 14% at midnight tonight. Moonrise is at 1:31 this morning. Moonset is at 17:04 this afternoon. Moonrise is at 2:21 tomorrow morning. Moonlight time is 15 hours, 33 minutes which is 13 minutes longer than yesterday. Moonlight time is two minutes short of peaking.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Labor Day is in 41 days.
Monday, July 25, 2011
July 25: ORD
Today is July 25th. It's the 206th day of the year. 159 days remain. It's week 30 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 84 and the normal low is 64. I've calculated the 32-year averages at 84 and 65.
On the hot side, in 1987 the high was 95 with a low of 74. In 1999 the high was 96 with a low of 73. The other 90s highs were 92 in 1995 and 90 in 2006. Another warm low was 73 in 2006. The record high of 101 was set in 1940. The record warmest low of 77 occurred way back in 1892. 22 of the past 32 highs (69%) were in the 80s. Four highs (12%) were in the hot 90s. Six highs (19%) were in the cool 70s.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1970 today and tomorrow (25th & 26th) the temperatures were the same: a high of 89 with a low of 71. In 1965 the high was 88 with a low of 58, a 30 degree spread.
More recently, there were no large or small temperature spreads.
On the cool side, in 2004 the high was 73, our coolest high, with a low of 60. In 1991 the high was 77 with a low of 58. Our coolest lows were 57 in both 1998 and 2000. The record low of 53 was set a century ago, in 1911. The record coolest high of 64 occurred back in 1920. 20 of the last 32 lows (62%) were in the 60s. Four lows (13%) were in the cool 50s. Eight lows (25%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:07 and sunrise is at 5:39. Sunset is at 20:20 and twilight ends at 20:53. There's a total of 14 hours, 41 minutes of daylight today and 15 hours, 46 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:08 and sunrise is at 5:40. The moon is waning crescent, having reached last quarter two days ago at 0:02. Illumination was 31% at midnight, will be 26% at noon and 22% at midnight tonight. Moonrise is at 0:47 this morning. Moonset is at 16:07 this afternoon. Moonrise is at 1:31 tomorrow morning. Moonlight time is 15 hours, 20 minutes which is 22 minutes longer than yesterday.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Labor Day is in 42 days.
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 84 and the normal low is 64. I've calculated the 32-year averages at 84 and 65.
On the hot side, in 1987 the high was 95 with a low of 74. In 1999 the high was 96 with a low of 73. The other 90s highs were 92 in 1995 and 90 in 2006. Another warm low was 73 in 2006. The record high of 101 was set in 1940. The record warmest low of 77 occurred way back in 1892. 22 of the past 32 highs (69%) were in the 80s. Four highs (12%) were in the hot 90s. Six highs (19%) were in the cool 70s.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1970 today and tomorrow (25th & 26th) the temperatures were the same: a high of 89 with a low of 71. In 1965 the high was 88 with a low of 58, a 30 degree spread.
More recently, there were no large or small temperature spreads.
On the cool side, in 2004 the high was 73, our coolest high, with a low of 60. In 1991 the high was 77 with a low of 58. Our coolest lows were 57 in both 1998 and 2000. The record low of 53 was set a century ago, in 1911. The record coolest high of 64 occurred back in 1920. 20 of the last 32 lows (62%) were in the 60s. Four lows (13%) were in the cool 50s. Eight lows (25%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:07 and sunrise is at 5:39. Sunset is at 20:20 and twilight ends at 20:53. There's a total of 14 hours, 41 minutes of daylight today and 15 hours, 46 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:08 and sunrise is at 5:40. The moon is waning crescent, having reached last quarter two days ago at 0:02. Illumination was 31% at midnight, will be 26% at noon and 22% at midnight tonight. Moonrise is at 0:47 this morning. Moonset is at 16:07 this afternoon. Moonrise is at 1:31 tomorrow morning. Moonlight time is 15 hours, 20 minutes which is 22 minutes longer than yesterday.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Labor Day is in 42 days.
Sunday, July 24, 2011
July 24: ORD
Today is July 24th. It's the 205th day of the year. 160 days remain. It's week 30 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 84 and the normal low is 64. I've calculated the 32-year averages at 85 and 64.
On the hot side, in 2005 the high was 102 with the record warmest low of 78. The record warmest low of 78 was first set in 1940. In 1987 the high was 92 with a low of 75. Our second hottest high was 94 in 1999. The record high of 105 was set back in 1934, the hottest temperature ever recorded in Chicago's history. An interesting sidebar was that for ten straight years from 1989 to 1998, there were no highs of 90 or above. 20 of the past 32 highs (63%) were in the 80s. Eight highs (25%) were in the hot: 90s (7) and 100s (1). Our most recent 90s high was 90 in 2001. Four highs (12%) were in the cool 70s.
In looking back through the years to the first July at O'Hare in 1959, there were no notable instances of significantly hot or cool temperatures from 1959-1978.
More recently, there was a large temperature spread (diurnal) of 32 degrees in 1988 as the high was 91 with a low of 59.
On the cool side, in 2004 the high was 71 with a low of 55. Four years earlier, in 2000, the high was 79 with the record low of 53. The record coolest high of 66 was set way back in 1896. The other cool highs were 74 in 1992 and 79 in 2002. Another cool low was 54 in 2003. 18 of the last 32 lows (56%) were in the 60s. Eight lows (25%) were in the cool 50s. Six lows (19%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:05 and sunrise is at 5:38. Sunset is at 20:21 and twilight ends at 20:54. There's a total of 14 hours, 43 minutes of daylight today and 15 hours, 49 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:07 and sunrise is at 5:39. The moon is waning crescent, having reached last quarter yesterday at 0:02. Illumination was 40% at midnight, will be 36% at noon and 31% at midnight tonight. Moonrise is at 0:10 this morning. Moonset is at 15:08 this afternoon. Moonrise is at 0:47 tomorrow. Moonlight time is 14 hours, 58 minutes which is 50 minutes longer than yesterday.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Parent's Day is today.
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 84 and the normal low is 64. I've calculated the 32-year averages at 85 and 64.
On the hot side, in 2005 the high was 102 with the record warmest low of 78. The record warmest low of 78 was first set in 1940. In 1987 the high was 92 with a low of 75. Our second hottest high was 94 in 1999. The record high of 105 was set back in 1934, the hottest temperature ever recorded in Chicago's history. An interesting sidebar was that for ten straight years from 1989 to 1998, there were no highs of 90 or above. 20 of the past 32 highs (63%) were in the 80s. Eight highs (25%) were in the hot: 90s (7) and 100s (1). Our most recent 90s high was 90 in 2001. Four highs (12%) were in the cool 70s.
In looking back through the years to the first July at O'Hare in 1959, there were no notable instances of significantly hot or cool temperatures from 1959-1978.
More recently, there was a large temperature spread (diurnal) of 32 degrees in 1988 as the high was 91 with a low of 59.
On the cool side, in 2004 the high was 71 with a low of 55. Four years earlier, in 2000, the high was 79 with the record low of 53. The record coolest high of 66 was set way back in 1896. The other cool highs were 74 in 1992 and 79 in 2002. Another cool low was 54 in 2003. 18 of the last 32 lows (56%) were in the 60s. Eight lows (25%) were in the cool 50s. Six lows (19%) were in the warm 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:05 and sunrise is at 5:38. Sunset is at 20:21 and twilight ends at 20:54. There's a total of 14 hours, 43 minutes of daylight today and 15 hours, 49 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:07 and sunrise is at 5:39. The moon is waning crescent, having reached last quarter yesterday at 0:02. Illumination was 40% at midnight, will be 36% at noon and 31% at midnight tonight. Moonrise is at 0:10 this morning. Moonset is at 15:08 this afternoon. Moonrise is at 0:47 tomorrow. Moonlight time is 14 hours, 58 minutes which is 50 minutes longer than yesterday.
Summer began June 4 and runs for 110 days through September 21. High temperatures in this period are usually in the 70s and 80s. Highs in the 60s, 90s and 100s occur infrequently. Parent's Day is today.
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