Today is September 15th. It's the 259th day of the year. 107 days remain. It's week 37 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. Before
this, the official site of record was on the south side of Chicago at
Midway International Airport (MDW), beginning on Wednesday, July 1,
1942. From Friday, January 1, 1926 through Tuesday, June 30, 1942, the
official site was at the University of Chicago. Before this, the
official site was at various locations in Chicago going back to Monday,
October 16, 1871. Observations taken from October 15, 1870 to October
8, 1871 were lost in the Great Chicago Fire.
According
to the National Climatic Data Center (NCDC), the normal high is 75
and the normal low is 55. I've calculated the 33-year averages at 72
and 54.
On the hot side, in 1994 (O'Hare's warmest September 15th) the high was 91 with
a low of 71 (O'Hare's warmest low of the date). Three years earlier, in 1991, the
high was 91 with a low of 68. Those highs of 91 degrees are O'Hare's hottest of the date. In 2004 the high was 86 with a low of
68. In 1992 the high was 85 with a low of 68. The other post-1978 warm low is 67
degrees in 1998. The record high of 99 was set back in 1939. The record
warmest low of 75 occurred back in 1927. Both records were set at the University of Chicago. 23 of the past 33
highs (70%) were in the: 60s (11) and 70s (12). O'Hare recorded consecutive 60s and 70s highs as follows: seven from 1979 through 1985 and six from 1998 through 2003. Eight highs (24%) were
in the warm: 80s (6) and 90s (2). Two highs (6%) were in the cool 50s,
this being the record coolest high of 55 degrees in 1993 and a high of 59 degrees last year, in 2011. O'Hare's second warmest low of 69 degrees occurred in 1969.
In
looking back through the years to the first September at O'Hare in
1959, the following instances were notable: in 1969 the low was a warm
69 degrees. In 1966 the high was 65 with a cold low of 40, a cool day.
In 1964 the high was a cool 62 degrees.
In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961
the low was a cold 41 degrees. In 1959 the high was a cool 62 degrees.
More recently, there was
a large spread of 31 degrees in 1985 (71/40). There were small
spreads of five degrees in 1998 (72/67) and seven degrees in 1980
(64/57).
On the cool side,
in 2007 (O'Hare's coolest September 15th) the high was 61 with the record low of 39. The former record
low (and second coldest low along with 1966) of 40 degrees occurred in 1985. Last year, in 2011, the high was 59 with a low of 42. In 1984 the high was 62 with a low of 41.
In 1993 the high was the record coolest high of 55 with a low of 51, a
four degree spread. The other cold low of 43 degrees occurred in 1999. The other cool highs are 62 degrees (1959, 1964, 1983 and 2000) and
63 degrees in 2008. The other co-record coolest high of 55
degrees occurred in 1916, a time when the official thermometer was located
adjacent to Lake Michigan. 18 of the last 33 lows (55%) were in the 50s. Eight lows (21%) were in the cold: 30s (1) and 40s (7).
Seven lows (21%) were in the warm: 60s (6) and 70s (1). So in
back-to-back years, we had our hottest and coolest highs (55 in 1993 and
91 in 1994).
There was an instance of back-to-back-to-back years in which temperatures were just about as opposite as they can be. It started in 1992 as the high was 85 with a low of 68, overall 11.5 degrees above normal. Then in 1993 the high was 55 with a low of 51, overall 12 degrees below normal. Then in 1994 the high was 91 with a low of 71, overall 16 degrees above normal.
The
following astronomical data is provided by the United States Naval
Observatory. In Crystal Lake, twilight begins at 6:06 and sunrise is at
6:34. Sunset is at 19:02 and twilight ends at 19:30. There's a total of
12 hours, 28 minutes of daylight today and 13 hours, 24 minutes between
twilights. We lost three minutes of daylight from yesterday. Tomorrow
twilight begins at 6:07 and sunrise is at 6:35. The moon is new tonight at 21:11. Illumination was 1% at midnight, will be 0% at noon and 0%
at midnight tonight. Moonrise was at 6:06 this morning. Moonset is at
18:31 tonight. Moonrise is at 7:16 tomorrow morning. Moonlight
time is 12 hours, 25 minutes which is 38 minutes shorter than yesterday.
Summer began on June 4th and runs for 110 days through September 21st. High
temperatures in this period are usually in the 70s and 80s. Highs in the
60s, 90s and 100s occur infrequently. Citizenship Day is in two days.
Showing posts with label September 15. Show all posts
Showing posts with label September 15. Show all posts
Sunday, September 16, 2012
Friday, September 16, 2011
September 15: ORD
Today is September 15th. It's the 258th day of the year. 107 days remain. It's week 37 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 75 and the normal low is 55. I've calculated the 32-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 (our most recent 90s high) with a low of 71 (our only 70s low). Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set back in 1939. The record warmest low of 75 occurred back in 1927. Both the record high and record warmest low were set in the city, closer to Lake Michigan. 23 of the past 32 highs (72%) were in the: 60s (11) and 70s (12). Eight highs (25%) were in the warm: 80s (6) and 90s (2). One high (3%) was in the cool 50s, this being the record coolest high of 55 in 1993.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was a warm 69 degrees. In 1966 the high was 65 with a cold low of 40, a cool day. In 1964 the high was a cool 62 degrees. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was a cold 41 degrees. In 1959 the high was a cool 62 degrees.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. In 1993 the high was the record coolest high of 55 with a low of 51, a four degree spread. Other cool highs were 62 in 1983, 62 in 2000 and 63 three years ago in 2008. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located adjacent to Lake Michigan. 18 of the last 32 lows (56%) were in the 50s. Seven lows (22%) were in the cold: 30s (1) and 40s (6). Seven lows (22%) were in the warm: 60s (6) and 70s (1). So in back-to-back years, we had our hottest and coolest highs (55 in 1993 and 91 in 1994).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:33. Sunset is at 19:03 and twilight ends at 19:31. There's a total of 12 hours, 30 minutes of daylight today and 13 hours, 26 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 6:06 and sunrise is at 6:34. The moon is waning gibbous and was full three days ago as the full Harvest (a.k.a. Barley) moon at 4:27. Illumination was 93% at midnight, will be 90% at noon and 87% at midnight tonight. Moonset is at 9:47 this morning. Moonrise is at 20:13 tonight. Moonset is at 10:46 tomorrow morning. Moonlight time is 13 hours, 34 minutes which is 32 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. Citizenship Day is in two 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 75 and the normal low is 55. I've calculated the 32-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 (our most recent 90s high) with a low of 71 (our only 70s low). Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set back in 1939. The record warmest low of 75 occurred back in 1927. Both the record high and record warmest low were set in the city, closer to Lake Michigan. 23 of the past 32 highs (72%) were in the: 60s (11) and 70s (12). Eight highs (25%) were in the warm: 80s (6) and 90s (2). One high (3%) was in the cool 50s, this being the record coolest high of 55 in 1993.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was a warm 69 degrees. In 1966 the high was 65 with a cold low of 40, a cool day. In 1964 the high was a cool 62 degrees. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was a cold 41 degrees. In 1959 the high was a cool 62 degrees.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. In 1993 the high was the record coolest high of 55 with a low of 51, a four degree spread. Other cool highs were 62 in 1983, 62 in 2000 and 63 three years ago in 2008. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located adjacent to Lake Michigan. 18 of the last 32 lows (56%) were in the 50s. Seven lows (22%) were in the cold: 30s (1) and 40s (6). Seven lows (22%) were in the warm: 60s (6) and 70s (1). So in back-to-back years, we had our hottest and coolest highs (55 in 1993 and 91 in 1994).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:33. Sunset is at 19:03 and twilight ends at 19:31. There's a total of 12 hours, 30 minutes of daylight today and 13 hours, 26 minutes between twilights. We lost three minutes of daylight from yesterday. Tomorrow twilight begins at 6:06 and sunrise is at 6:34. The moon is waning gibbous and was full three days ago as the full Harvest (a.k.a. Barley) moon at 4:27. Illumination was 93% at midnight, will be 90% at noon and 87% at midnight tonight. Moonset is at 9:47 this morning. Moonrise is at 20:13 tonight. Moonset is at 10:46 tomorrow morning. Moonlight time is 13 hours, 34 minutes which is 32 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. Citizenship Day is in two days.
Thursday, September 16, 2010
September 15: ORD
Today is September 15th. It's the 258th day of the year. 107 days remain. It's week 37 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 75 and the normal low is 54. I've calculated the 31-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 with a low of 71. Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set back in 1939. The record warmest low of 75 was set back in 1927. Over the last 31 years, 22 highs (71%) were: 60s (11) and 70s (11). Eight highs were in the warmer: 80s (6) and 90s (2). One high was in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was a warm 69. In 1966 the high was 65 with a cool low of 40, a cool day. In 1964 the high was a cool 62. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was a cool 41. In 1959 the high was a cool 62.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of four degrees in 1993 (55/51), five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. Other cool highs are the co-record coolest high of 55 in 1993, 62 in 1983 and 62 in 2000. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located on the lakefront. Over the last 31 years, 17 lows were 50s. Seven lows were in the cooler: 30s (1) and 40s (6). Seven lows were in the warmer: 60s (6) and 70s (1).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:33. Sunset is at 19:03 and twilight ends at 19:31. There's a total of 12 hours, 30 minutes of daylight today and 13 hours, 26 minutes between twilights. We are losing two or three minutes of daylight a day. Tomorrow twilight begins at 6:06 and sunrise is at 6:34. The moon reaches first quarter this morning at 50 minutes past midnight. Illumination was 50% at midnight, will be 55% at noon and 60% at midnight tonight. Moonrise is at 14:50 this afternoon. Moonset is at 23:57 tonight and moonrise is at 15:34 tomorrow afternoon. Moonlight time is 9 hours, 7 minutes which is 6 minutes longer than yesterday.
Citizenship day is in two 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 75 and the normal low is 54. I've calculated the 31-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 with a low of 71. Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set back in 1939. The record warmest low of 75 was set back in 1927. Over the last 31 years, 22 highs (71%) were: 60s (11) and 70s (11). Eight highs were in the warmer: 80s (6) and 90s (2). One high was in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was a warm 69. In 1966 the high was 65 with a cool low of 40, a cool day. In 1964 the high was a cool 62. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was a cool 41. In 1959 the high was a cool 62.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of four degrees in 1993 (55/51), five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. Other cool highs are the co-record coolest high of 55 in 1993, 62 in 1983 and 62 in 2000. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located on the lakefront. Over the last 31 years, 17 lows were 50s. Seven lows were in the cooler: 30s (1) and 40s (6). Seven lows were in the warmer: 60s (6) and 70s (1).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:33. Sunset is at 19:03 and twilight ends at 19:31. There's a total of 12 hours, 30 minutes of daylight today and 13 hours, 26 minutes between twilights. We are losing two or three minutes of daylight a day. Tomorrow twilight begins at 6:06 and sunrise is at 6:34. The moon reaches first quarter this morning at 50 minutes past midnight. Illumination was 50% at midnight, will be 55% at noon and 60% at midnight tonight. Moonrise is at 14:50 this afternoon. Moonset is at 23:57 tonight and moonrise is at 15:34 tomorrow afternoon. Moonlight time is 9 hours, 7 minutes which is 6 minutes longer than yesterday.
Citizenship day is in two days. -Bernie-
Tuesday, September 15, 2009
September 15: ORD
Today is September 15th. It's the 258th day of the year. 107 days remain. It's week 37 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 75 and the normal low is 54. I've calculated the 30-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 with a low of 71. Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set in 1939. The record warmest low of 75 was set back in 1927. Over the last 30 years, 22 highs were: 60s (11) and 70s (11). Seven highs were in the warmer: 80s (5) and 90s (2). One high was in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was just 69. In 1966 the high was 65 with a low of 40, a cool day. In 1964 the high was just 62. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was 41. In 1959 the high was just 62.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of four degrees in 1993 (55/51), five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. Other cool highs are the co-record coolest high of 55 in 1993, 62 in 1983 and 62 in 2000. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located on the lakefront. Over the last 30 years, 17 lows were 50s. Seven lows were in the cooler: 30s (1) and 40s (6). Six lows were in the warmer: 60s (5) and 70s (1).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:34. Sunset is at 19:03 and twilight ends at 19:31. Tomorrow twilight begins at 6:06 and sunrise is at 6:35. There's a total of 12 hours, 29 minutes of daylight today (three minutes less than yesterday) and 13 hours, 26 minutes between twilights. The moon is waning crescent. Illumination was 17% at midnight, will be 12% at noon and 9% at midnight tonight. Moonrise was at 2:37. Moonset is at 17:15 this afternoon. Moonrise is at 3:56 early tomorrow morning. Moonlight time is 14 hours, 38 minutes which is 44 minutes shorter than yesterday.
Citizenship Day is in two days. The autumnal equinox is in seven 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 75 and the normal low is 54. I've calculated the 30-year averages at 72 and 54.
On the hot side, in 1994 the high was 91 with a low of 71. Three years earlier, in 1991, the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. Another warm low was 67 in 1998. The record high of 99 was set in 1939. The record warmest low of 75 was set back in 1927. Over the last 30 years, 22 highs were: 60s (11) and 70s (11). Seven highs were in the warmer: 80s (5) and 90s (2). One high was in the cooler 50s.
In looking back through the years to the first September at O'Hare in 1959, the following instances were notable: in 1969 the low was just 69. In 1966 the high was 65 with a low of 40, a cool day. In 1964 the high was just 62. In 1963 the high was 78 with a low of 46, a 32 degree spread. In 1961 the low was 41. In 1959 the high was just 62.
More recently, there was a large spread of 31 degrees in 1985 (71/40). There were small spreads of four degrees in 1993 (55/51), five degrees in 1998 (72/67) and seven degrees in 1980 (64/57).
On the cool side, in 2007 the high was 61 with the record low of 39. The former record low of 40 occurred in 1985. In 1984 the high was 62 with a low of 41. Other cool highs are the co-record coolest high of 55 in 1993, 62 in 1983 and 62 in 2000. The other co-record coolest high of 55 occurred in 1916, a time when the official thermometer was located on the lakefront. Over the last 30 years, 17 lows were 50s. Seven lows were in the cooler: 30s (1) and 40s (6). Six lows were in the warmer: 60s (5) and 70s (1).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:05 and sunrise is at 6:34. Sunset is at 19:03 and twilight ends at 19:31. Tomorrow twilight begins at 6:06 and sunrise is at 6:35. There's a total of 12 hours, 29 minutes of daylight today (three minutes less than yesterday) and 13 hours, 26 minutes between twilights. The moon is waning crescent. Illumination was 17% at midnight, will be 12% at noon and 9% at midnight tonight. Moonrise was at 2:37. Moonset is at 17:15 this afternoon. Moonrise is at 3:56 early tomorrow morning. Moonlight time is 14 hours, 38 minutes which is 44 minutes shorter than yesterday.
Citizenship Day is in two days. The autumnal equinox is in seven days. -Bernie-
Monday, September 15, 2008
September 15: ORD
Today is September 15th. It's the 259th day of the year. 107 days remain. It's week 38 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. Observations have been official at O'Hare since Thursday, January 17, 1980.
According to the National Climatic Data Center (NCDC), the normal high is 74 and the normal low is 54. The 29-year averages are 72 and 54.
On the hot side, in 1994 the high was 91 with a low of 71. In 1991 the high was 91 with a low of 68. In 2004 the high was 86 with a low of 68. In 1992 the high was 85 with a low of 68. In 1987 the high was 81 with a low of 64. Other warm highs were 82 in 1997 and 80 in 1986. Another warm low was 67 in 1998. 4 of the 8 years from 1987 to 1994 comprised 4 of the 5 warmest days. The record high of 99 was set in 1939 and the record warmest low of 75 was set in 1927. 21 of the 29 highs have been 60s (10) and 70s (11).
The biggest difference between a daily high and low was 31 degrees in 1985 (high of 71, low of 40). One small difference was five degrees in 1998 (high of 72, low of 67). The other small difference is listed below on the cool side.
On the cool side, last year the high was 61 with the record low of 39 (the former record low was 40 in 1985). In 1984 the high was 62 with a low of 41. In 1993 the high was 55 (the earliest 50s high of fall and record-tying coolest high) with a low of 51 (just a 4 degree difference between the high and low). The other cool lows were 40 in 1985, 43 in 1999, 47 (1979, 1989) and 49 in 2000. The other record coolest high of 55 was set in 1916. 16 of the 29 lows since 1979 have been 50s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 6:06 and sunrise is at 6:34. Sunset is at 19:02 and twilight ends at 19:30. Twilight begins tomorrow at 6:07 and sunrise is at 6:35. There's a total of 12 hours, 28 minutes of daylight today and 13 hours, 24 minutes between twilights. The moon reached full Harvest today at 4:13. Illumination was 100% at midnight, will be 100% at noon and 99% at midnight tonight. Moonset is at 6:50 this morning. Moonrise is at 18:58 tonight and moonset is at 8:02 tomorrow. Moonlight time is 11 hours, 52 minutes today.
Constitution Day, also known as Citizenship day, is in two days. This is a newer holiday, having been enacted by Congress just four years ago. The website "www.patriotism.org" says that Constitution Day is "a birthday for our country and it serves as a means for American citizens to express their pride in their citizenship. Constitution Day also designates a time to honor the Constitution of America and learn more about the famous piece of legislation." -Bernie-
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