Today is July 28th. It's the 210th day of the year. 156 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. 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 that, 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 84
and the normal low is 64. I've calculated the 33-year averages at 84
and 64.
On
the hot side, in 1983 (O'Hare's warmest July 28th) the high was the record high of 100 with a low
of 78 (O'Hare's warmest low of the date). In 1988 the high was 98 with a low of 70. The record warmest low of 84 occurred back in 1916, at a time when the official readings were taken adjacent to Lake Michigan. 19 of the past 33 highs (58%) were in the 80s. Five
highs (15%) were in the hot: 90s (4) and 100s (1). Nine highs (27%)
were in the cool: 60s (1) and 70s (8). There was a 10 year sub-90
degree period that started in 1989 and went through 1998. Another
interesting phenomenon is that the two instances of very hot highs were
followed the next year by cool highs. In 1983 the high was 100,
followed by a high of only 75 in 1984, 25 degrees cooler. In 1988 the
high was 98 followed by a high of only 74 in 1989, 24 degrees cooler.
There was such a contrast in between 1983 and 1984 that in 1983 the
record high occurred followed the following year by the record low!
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1973 the high was a cool 70 degrees. In 1962 the high was a cool 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side,
in 1981 (O'Hare's coolest July 28th) the high was the record coolest high of 66 with a low of 52.
This (along with 1962's high of 67) were the only 60s highs at O'Hare on July 28th. In 1984 the high was 75 with the record low of 51. 25 of the last 33 lows (76%) were in
the: 50s (11) and 60s (14). There were seven consecutive 50s & 60s lows from 2003 through 2009. Eight lows (24%) were in the warm 70s.
The
following
astronomical data
is
provided by
the
United
States
Naval
Observatory. In
Crystal
Lake,
twilight begins
at 5:11 and
sunrise is
at 5:43.
Sunset is at 20:16
and
twilight
ends at 20:48.
There's
a total
of 14 hours, 33 minutes of
daylight
today
and 15
hours, 37 minutes between
twilights.
We lost two minutes of daylight from
yesterday. Tomorrow
twilight
begins
at 5:12 and sunrise
is at 5:44.
The moon is waxing
gibbous, having reached first quarter two days ago at 3:56. Illumination
was 71% at
midnight, will be 76% at noon
and 81% at
midnight
tonight. Moonset was at 1:01 this morning. Moonrise is at 16:22 this afternoon. Moonset is at 1:56 tomorrow morning. Moonlight
time is 8 hours, 39 minutes which is 20 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 90s and 100s occur
infrequently. Labor Day is in 37 days.
Showing posts with label July 28. Show all posts
Showing posts with label July 28. Show all posts
Sunday, July 29, 2012
Thursday, July 28, 2011
July 28: ORD
Today is July 28th. It's the 209th day of the year. 156 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 1983 the high was the record high of 100 with a low of 78. In 1988 the high was 98 with a low of 70. The other 90s highs were 93 in 2006, 91 in 1999 and 90 in 1985. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 18 of the past 32 highs (56%) were in the 80s. Five highs (16%) were in the hot: 90s (4) and 100s (1). Nine highs (28%) were in the cool: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998. Another interesting phenomenon is that the two instances of very hot highs were followed the next year by cool highs. In 1983 the high was 100, followed by a high of only 75 in 1984, 25 degrees cooler. In 1988 the high was 98 followed by a high of only 74 in 1989, 24 degrees cooler. There was such a contrast in between 1983 and 1984 that in 1984 the record low occurred, the year following the record high!
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1973 the high was a cool 70 degrees. In 1962 the high was a cool 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest high of 66 with a low of 52. This (along with 1962's high of 67) were the only 60s highs at O'Hare. Three years later, in 1984, the high was 75 with the record low of 51. Another cool low was 53 in 2005. 25 of the last 32 lows (78%) were in the: 50s (11) and 60s (14). 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 5:10 and sunrise is at 5:42. Sunset is at 20:17 and twilight ends at 20:49. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. The moon is waning crescent, heading towards new in two days. Illumination was 8% at midnight, will be 5% at noon and 3% at midnight tonight. Moonrise is at 3:21 this morning. Moonset is at 18:43 this afternoon. Moonrise is at 4:27 tomorrow morning. Moonlight time is 15 hours, 22 minutes which is 13 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 39 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 64.
On the hot side, in 1983 the high was the record high of 100 with a low of 78. In 1988 the high was 98 with a low of 70. The other 90s highs were 93 in 2006, 91 in 1999 and 90 in 1985. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 18 of the past 32 highs (56%) were in the 80s. Five highs (16%) were in the hot: 90s (4) and 100s (1). Nine highs (28%) were in the cool: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998. Another interesting phenomenon is that the two instances of very hot highs were followed the next year by cool highs. In 1983 the high was 100, followed by a high of only 75 in 1984, 25 degrees cooler. In 1988 the high was 98 followed by a high of only 74 in 1989, 24 degrees cooler. There was such a contrast in between 1983 and 1984 that in 1984 the record low occurred, the year following the record high!
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1973 the high was a cool 70 degrees. In 1962 the high was a cool 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest high of 66 with a low of 52. This (along with 1962's high of 67) were the only 60s highs at O'Hare. Three years later, in 1984, the high was 75 with the record low of 51. Another cool low was 53 in 2005. 25 of the last 32 lows (78%) were in the: 50s (11) and 60s (14). 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 5:10 and sunrise is at 5:42. Sunset is at 20:17 and twilight ends at 20:49. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. We lost two minutes of daylight from yesterday. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. The moon is waning crescent, heading towards new in two days. Illumination was 8% at midnight, will be 5% at noon and 3% at midnight tonight. Moonrise is at 3:21 this morning. Moonset is at 18:43 this afternoon. Moonrise is at 4:27 tomorrow morning. Moonlight time is 15 hours, 22 minutes which is 13 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 39 days.
Wednesday, July 28, 2010
July 28: ORD
Today is July 28th. It's the 209th day of the year. 156 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 31-year averages at 83 and 63.
On the hot side, in 1983 the high was the record high of 100 with a low of 78. Another hot high was 98 in 1988. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 17 of the last 31 highs were 80s. Five highs were in the warmer: 90s (4) and 100s (1). Nine highs were in the cooler: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1973 the high was a cool 70. In 1962 the high was 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest at 66 degrees with a low of 52. This (along with 1962) were the only 60s highs at O'Hare. The record low of 51 was set in 1984. 25 of the last 31 lows (81%) were: 50s (11) and 60s (14). Six lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 5:10 and sunrise was at 5:42. Sunset is at 20:17 and civil twilight ends at 20:49. Nautical twilight ends at 21:29 and astronomical twilight ends at 22:14. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. We are losing about two minutes of daylight a day. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. The moon is waning gibbous. Illumination was 96% at midnight, will be 93% at noon and 91% at midnight tonight. Moonset was at 8:16 this morning. Moonrise is at 21:18 tonight. Moonset is at 9:16 tomorrow morning. Moonlight time is 10 hours, 58 minutes which is 38 minutes longer than yesterday. -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 84 and the normal low is 64. I've calculated the 31-year averages at 83 and 63.
On the hot side, in 1983 the high was the record high of 100 with a low of 78. Another hot high was 98 in 1988. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 17 of the last 31 highs were 80s. Five highs were in the warmer: 90s (4) and 100s (1). Nine highs were in the cooler: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1973 the high was a cool 70. In 1962 the high was 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest at 66 degrees with a low of 52. This (along with 1962) were the only 60s highs at O'Hare. The record low of 51 was set in 1984. 25 of the last 31 lows (81%) were: 50s (11) and 60s (14). Six lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 5:10 and sunrise was at 5:42. Sunset is at 20:17 and civil twilight ends at 20:49. Nautical twilight ends at 21:29 and astronomical twilight ends at 22:14. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. We are losing about two minutes of daylight a day. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. The moon is waning gibbous. Illumination was 96% at midnight, will be 93% at noon and 91% at midnight tonight. Moonset was at 8:16 this morning. Moonrise is at 21:18 tonight. Moonset is at 9:16 tomorrow morning. Moonlight time is 10 hours, 58 minutes which is 38 minutes longer than yesterday. -Bernie-
Wednesday, July 29, 2009
July 28: ORD
Today is July 28th. It's the 209th day of the year. 156 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 30-year averages at 83 and 63.
On the hot side, in 1983 the high was the record high of 100 with a low of 78. Another hot high was 98 in 1988. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 16 of the last 30 highs were 80s. Five highs were in the warmer: 90s (4) and 100s (1). Nine highs were in the cooler: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1975 the high was 90. In 1970 the high was 90. In 1964 the high was 90. In 1962 the low was 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest at 66 degrees with a low of 52. The record low of 51 was set in 1984. 24 of the last 30 lows were: 50s (11) and 60s (13). Six lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:10 and sunrise is at 5:42. Sunset is at 20:17 and twilight ends at 20:49. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. The moon reaches first quarter today at 17:00. Illumination was 43% at midnight, will be 48% at noon and 54% at midnight tonight. Moonrise is at 13:36 this afternoon. Moonset is at 23:30 tonight. Moonrise is at 14:43 tomorrow afternoon. Moonlight time is 9 hours, 54 minutes which is 41 minutes shorter than yesterday.
-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 84 and the normal low is 64. I've calculated the 30-year averages at 83 and 63.
On the hot side, in 1983 the high was the record high of 100 with a low of 78. Another hot high was 98 in 1988. Another warm low was 74 in 2002. The record warmest low of 84 occurred back in 1916. 16 of the last 30 highs were 80s. Five highs were in the warmer: 90s (4) and 100s (1). Nine highs were in the cooler: 60s (1) and 70s (8). There was a 10 year sub-90 degree period that started in 1989 and went through 1998.
In looking back through the years to the first July at O'Hare in 1959, the following instances were notable: In 1975 the high was 90. In 1970 the high was 90. In 1964 the high was 90. In 1962 the low was 67 with a low of 63, a four degree spread.
More recently, there were no small spreads (diurnals of seven degrees or less) or large spreads (diurnals of 30 degrees or more).
On the cool side, in 1981 the high was the record coolest at 66 degrees with a low of 52. The record low of 51 was set in 1984. 24 of the last 30 lows were: 50s (11) and 60s (13). Six lows were in the warmer 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:10 and sunrise is at 5:42. Sunset is at 20:17 and twilight ends at 20:49. Tomorrow twilight begins at 5:11 and sunrise is at 5:43. There's a total of 14 hours, 35 minutes of daylight today and 15 hours, 39 minutes between twilights. The moon reaches first quarter today at 17:00. Illumination was 43% at midnight, will be 48% at noon and 54% at midnight tonight. Moonrise is at 13:36 this afternoon. Moonset is at 23:30 tonight. Moonrise is at 14:43 tomorrow afternoon. Moonlight time is 9 hours, 54 minutes which is 41 minutes shorter than yesterday.
-Bernie-
Monday, July 28, 2008
July 28: ORD
Today is July 28th. It's the 210th day of the year. 156 days remain.
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 84 and the normal low is 64. The 29-year averages are 83 and 63.
On the cool side, in 1981 the high was the record coolest high of 66 with a low of 52. In 1984 the high was 75 with the record low of 51. In 2003 the high was 73 with a low of 56. In 2005 the high was 79 with a low of 53. In 1994 the high was 76 with a low of 56. Other 70s highs were 74 in 1989, 75 in 1996, 78 in 2001 and 79 in 1982. Another cool low was 55 in 2004. 23 of the 29 lows have been 50s (11) and 60s (12). Six lows have been 70s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 5:11 and sunrise is at 5:43. Sunset is at 20:16 and twilight ends at 20:48. There's a total of 14 hours, 33 minutes of sunlight and 15 hours, 37 minutes between twilights. The moon is waning crescent with 23% visible at midnight and 18% visible at noon. Moonrise is at 1:05 and moonset is at 17:25. Moonlight time is 16 hours, 20 minutes today.
-Bernie-
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