Today is August 31st. It's the 243rd day of the year. 122 days remain. It's week 35 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 80 and the normal low is 61. I've calculated the 32-year averages at 80 and 60.
On the hot side, last year, in 2010, the high was 93 with a low of 75. A decade before, in 2000, the high was 92 with a low of 68. The only other 90s high was 90 three years ago in 2008. The only other 70s low was 71 in 1980. The record high of 99 was set in 1953. The record warmest low of 76 was set in 1941. 28 of the past 32 highs (88%) were in the: 70s (13) and 80s (15). Three highs were in the hot 90s and one was in the cool 60s (a high of 68 two years ago in 2009). We've seen extremes the last three years. In '08 the high was 90. Then in '09 the high was 68. And then back up to 93 last year. There was a long string of 70s & 80s highs, 22 years from 1978 through 1999.
In looking back through the years to the first August at O'Hare in 1959, the following instances were notable: In 1975 the high was 72 with a low of 65, a seven degree spread. In 1973 low was a warm 73 degrees. In 1967 the high was 67 with a low of 47, a cool day. That low of 47 is equal to the record low. In 1965 the high was a cool 68 degrees. In 1964 the low was a cold 49 degrees. In 1961 the high was a hot 92 with a low of 62, a 30 degree spread. In 1960 the high was a hot 93 with a low of 70, a hot day.
More recently, there were large spreads of 31 degrees in 1984 (82/51) and 30 degrees three years ago, in 2008 (90/60).
On the cool side, two years ago, in 2009, the high was 68 with a low of 49. That low of 49 was the first 40s low of the past 44 years and just the third 40s low in O'Hare's history (47 in 1967 and 49 in 1964 were the others). In 1994 the high was 71 with a low of 52. In 1987 the high was 72 with a low of 52. The other low 70s high was 70 in 2003. The record low of 47 was set way back in 1872. The record coolest high of 62 occurred way back in 1892. 29 of the last 32 lows (91%) were in the: 50s (14) and 60s (15). One low was in the cold 40s and two were in the warm 70s. The past two years have had radically different lows. In '09 the low was a cold 49 and last year it was a warm 75. There was a string of 28 straight years of 50s & 60s lows from 1981 through 2008.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:48 and sunrise is at 6:17. Sunset is at 19:29 and twilight ends at 19:58. There's a total of 13 hours, 12 minutes of daylight today and 14 hours, 10 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 5:50 and sunrise is at 6:18. The moon is waxing crescent. Illumination was 7% at midnight, will be 10% at noon and 14% at midnight tonight. Moonrise is at 9:29 this morning. Moonset is at 20:35 tonight. Moonrise is at 10:45 tomorrow morning. Moonlight time is 11 hours, 6 minutes which is 43 minutes shorter 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 five days. 9/11 Remembrance Day and Grandparents Day are in ten days.
Wednesday, August 31, 2011
Tuesday, August 30, 2011
August 30: ORD
Today is August 30th. It's the 242nd day of the year. 123 days remain. It's week 35 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 80 and the normal low is 61. I've calculated the 32-year averages at 80 and 61.
On the hot side, in 1995 the high was 92 with a low of 74. Last year, in 2010, the high was 88 with a low of 74. The other 90s high was 90 in 1993. So the 90s highs occurred within two years of each other. The other 70s lows were 72 in 1983 and 71 (1980, 1991 and 2000). The record high of 96 was last set in 1953 after originally being set back in 1925. The record warmest low of 76 occurred back in 1932, having originally been set way back in 1881. 27 of the past 32 highs (84%) were in the: 70s (11) and 80s (16). Two highs were in the warm 90s and three were in the cool 60s (66 two years ago (in 2009), 67 in 1994 and 69 in 1999). There were two long streaks of highs in the 70s & 80s. The first was 22 years from 1971 through 1992 and then nine years from 2000 through 2008.
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 79 with a low of 49, a 30 degree spread. In 1967 the high was a cool 67 degrees. In 1965 the high was a cool 64 degrees. In 1962 the high was a hot 92 with a low of 62, a 30 degree spread. In 1959 the temperatures for yesterday (the 29th) and today (the 30th) were the same: a high of 86 with a low of 69.
More recently, there was a large spread of 31 degrees three years ago, in 2008 (87/51) and a small spread of six degrees in 1994 (67/61).
On the cool side, two years ago, in 2009, the high was 66 with a low of 51. In 1999 the high was 69 with a low of 55. The only other 60s high was 67 in 1994. In 1986 the high was 76 with a low of 48. The only other 40s low was 49 in 1988. So the 40s lows occurred within two years of each other. The record low of 47 was last set in 1946 after originally being set back in 1915. The record coolest high of 58 occurred way back in 1915. 24 of the last 32 lows (75%) were in the: 50s (13) and 60s (11). Two lows were in the cold 40s and six were in the warm 70s. For nine straight years, from 2001 through 2009, lows were in the 50s & 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:47 and sunrise is at 6:16. Sunset is at 19:31 and twilight ends at 20:00. There's a total of 13 hours, 15 minutes of daylight today and 14 hours, 13 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 5:48 and sunrise is at 6:17. The moon is waxing crescent, having passed new two nights ago at 22:04. Illumination was 2% at midnight, will be 4% at noon and 7% at midnight tonight. Moonrise is at 8:13 this morning. Moonset is at 20:02 tonight. Moonrise is at 9:29 tomorrow morning. Moonlight time is 11 hours, 49 minutes which is 45 minutes shorter 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 six days. 9/11 Remembrance Day and Grandparents Day are in 11 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 80 and the normal low is 61. I've calculated the 32-year averages at 80 and 61.
On the hot side, in 1995 the high was 92 with a low of 74. Last year, in 2010, the high was 88 with a low of 74. The other 90s high was 90 in 1993. So the 90s highs occurred within two years of each other. The other 70s lows were 72 in 1983 and 71 (1980, 1991 and 2000). The record high of 96 was last set in 1953 after originally being set back in 1925. The record warmest low of 76 occurred back in 1932, having originally been set way back in 1881. 27 of the past 32 highs (84%) were in the: 70s (11) and 80s (16). Two highs were in the warm 90s and three were in the cool 60s (66 two years ago (in 2009), 67 in 1994 and 69 in 1999). There were two long streaks of highs in the 70s & 80s. The first was 22 years from 1971 through 1992 and then nine years from 2000 through 2008.
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 79 with a low of 49, a 30 degree spread. In 1967 the high was a cool 67 degrees. In 1965 the high was a cool 64 degrees. In 1962 the high was a hot 92 with a low of 62, a 30 degree spread. In 1959 the temperatures for yesterday (the 29th) and today (the 30th) were the same: a high of 86 with a low of 69.
More recently, there was a large spread of 31 degrees three years ago, in 2008 (87/51) and a small spread of six degrees in 1994 (67/61).
On the cool side, two years ago, in 2009, the high was 66 with a low of 51. In 1999 the high was 69 with a low of 55. The only other 60s high was 67 in 1994. In 1986 the high was 76 with a low of 48. The only other 40s low was 49 in 1988. So the 40s lows occurred within two years of each other. The record low of 47 was last set in 1946 after originally being set back in 1915. The record coolest high of 58 occurred way back in 1915. 24 of the last 32 lows (75%) were in the: 50s (13) and 60s (11). Two lows were in the cold 40s and six were in the warm 70s. For nine straight years, from 2001 through 2009, lows were in the 50s & 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:47 and sunrise is at 6:16. Sunset is at 19:31 and twilight ends at 20:00. There's a total of 13 hours, 15 minutes of daylight today and 14 hours, 13 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 5:48 and sunrise is at 6:17. The moon is waxing crescent, having passed new two nights ago at 22:04. Illumination was 2% at midnight, will be 4% at noon and 7% at midnight tonight. Moonrise is at 8:13 this morning. Moonset is at 20:02 tonight. Moonrise is at 9:29 tomorrow morning. Moonlight time is 11 hours, 49 minutes which is 45 minutes shorter 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 six days. 9/11 Remembrance Day and Grandparents Day are in 11 days.
August 29: ORD
Today is August 29th. It's the 241st day of the year. 124 days remain. It's week 35 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 80 and the normal low is 61. I've calculated the 32-year averages at 81 and 61.
On the hot side, in 1984 the high was 94 with a low of 71. In 1991 the high was 92 with a low of 73. Last year, in 2010, the high was 94 with a low of 71. The other 90s highs were 94 in 1983 and 92 in 1980. The other 70s lows were 73 in 1995 and 70 in 2000. The record high of 98 was set in 1953. The record warmest low of 74 was set in 1973. 25 of the past 32 highs (78%) were in the: 70s (10) and 80s (15). Five highs were in the warm 90s and two highs were in the cool 60s (69 two years ago (in 2009) and 69 also in 2004). There were 12 straight years of highs in the 70s and 80s from 1992 through 2003.
In looking back through the years to the first August at O'Hare in 1959, the following instances were notable: In 1973 the high was 92 with a low of 73, a hot day. 1973 was the year of the record warmest low. In 1971 the high was 84 with a low of 53, a 31 degree spread. In 1965 the high was 66 with a low of 41, a cool day. That low of 41 was colder than the record low. In 1964 the high was 83 with a low of 52, a 31 degree spread. In 1962 the high was a hot 92 with a low of 59, a 33 degree spread. In 1959 the temperatures for today (the 29th) and tomorrow (the 30th) were the same: a high of 86 with a low of 69.
More recently, there was a large spread of 30 degrees in 1983 (high of 94 and low of 64).
On the cool side, in 1986 the high was 71 with a low of 44. Four years earlier, in 1982, the high was 72 with the co-record low of 43. The record low of 43 was first set in 1965. Another cool low was 48 in 1988. As you can see, those 40s lows occurred quite some time ago from 1982 through 1988. The record coolest high of 62 occurred way back in 1893. 24 of the last 32 lows (75%) were in the: 50s (9) and 60s (15). Three lows were in the cool 40s. Five lows were in the warm 70s. For nine straight years, from 2001 to 2009, lows were in the 50s and 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:46 and sunrise is at 6:15. Sunset is at 19:33 and twilight ends at 20:02. There's a total of 13 hours, 18 minutes of daylight today and 14 hours, 16 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:47 and sunrise is at 6:16. The moon is waxing crescent, having passed new yesterday at 22:04. Illumination was 0% at midnight, will be 1% at noon and 2% at midnight tonight. Moonrise is at 6:57 this morning. Moonset is at 19:31 tonight. Moonrise is at 8:13 tomorrow morning. Moonlight time is 12 hours, 34 minutes which is 46 minutes shorter 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 seven days. 9/11 Remembrance Day and Grandparents Day are in 12 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 80 and the normal low is 61. I've calculated the 32-year averages at 81 and 61.
On the hot side, in 1984 the high was 94 with a low of 71. In 1991 the high was 92 with a low of 73. Last year, in 2010, the high was 94 with a low of 71. The other 90s highs were 94 in 1983 and 92 in 1980. The other 70s lows were 73 in 1995 and 70 in 2000. The record high of 98 was set in 1953. The record warmest low of 74 was set in 1973. 25 of the past 32 highs (78%) were in the: 70s (10) and 80s (15). Five highs were in the warm 90s and two highs were in the cool 60s (69 two years ago (in 2009) and 69 also in 2004). There were 12 straight years of highs in the 70s and 80s from 1992 through 2003.
In looking back through the years to the first August at O'Hare in 1959, the following instances were notable: In 1973 the high was 92 with a low of 73, a hot day. 1973 was the year of the record warmest low. In 1971 the high was 84 with a low of 53, a 31 degree spread. In 1965 the high was 66 with a low of 41, a cool day. That low of 41 was colder than the record low. In 1964 the high was 83 with a low of 52, a 31 degree spread. In 1962 the high was a hot 92 with a low of 59, a 33 degree spread. In 1959 the temperatures for today (the 29th) and tomorrow (the 30th) were the same: a high of 86 with a low of 69.
More recently, there was a large spread of 30 degrees in 1983 (high of 94 and low of 64).
On the cool side, in 1986 the high was 71 with a low of 44. Four years earlier, in 1982, the high was 72 with the co-record low of 43. The record low of 43 was first set in 1965. Another cool low was 48 in 1988. As you can see, those 40s lows occurred quite some time ago from 1982 through 1988. The record coolest high of 62 occurred way back in 1893. 24 of the last 32 lows (75%) were in the: 50s (9) and 60s (15). Three lows were in the cool 40s. Five lows were in the warm 70s. For nine straight years, from 2001 to 2009, lows were in the 50s and 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:46 and sunrise is at 6:15. Sunset is at 19:33 and twilight ends at 20:02. There's a total of 13 hours, 18 minutes of daylight today and 14 hours, 16 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:47 and sunrise is at 6:16. The moon is waxing crescent, having passed new yesterday at 22:04. Illumination was 0% at midnight, will be 1% at noon and 2% at midnight tonight. Moonrise is at 6:57 this morning. Moonset is at 19:31 tonight. Moonrise is at 8:13 tomorrow morning. Moonlight time is 12 hours, 34 minutes which is 46 minutes shorter 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 seven days. 9/11 Remembrance Day and Grandparents Day are in 12 days.
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