Today is May 26th. It's the 147th day of the year. 219 days remain. It's week 21 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 73
and the normal low is 51. I've calculated the 33-year averages at 70
and 49.
On
the warm side, two years ago, in 2010 (tied with 1967 as O'Hare's warmest May 26th), the high was 87 with a low of 66.
In 1985 the high was 89 with a low of 62. In 1991 the high was 82 with
a low of 69 (O'Hare's warmest low of the date). In 1987 the high was 86 with a low of 61. The record high
of 94 was set back in 1911 and the record
warmest low of 75 occurred in 1914. Both records were set at a time when the official readings were taken adjacent to Lake Michigan. 22 of the past 33 highs (67%)
were in the: 60s (9) and 70s (13). O'Hare recorded six consecutive highs in the 60s & 70s from 1979 through 1984. Six highs (18%) were in the warm
80s. Five highs (15%) were in the cool: 40s (1) and 50s (4). There seems to be a distinction in terms of the eras of the 80s highs. The
first three happened between 1985 and 1991. The second three happened
between 2006 and two years ago (2010). 1967 is tied with 2010 as the warmest May 26th with a high of 92 (O'Hare's warmest high of the date) and low of 61.
In looking back through the years
to the first May at O'Hare in 1959, the following instances were
notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971
the high was a cool 54 with a low of 43, a cool day. In 1969 the high
was 74 with a cold low of 39, a 35 degree spread. In 1967 the high was
a hot 92 with a low of 61, a 31 degree spread and hot day. In 1966 the
high was 82 with a low of 49, a 33 degree spread. In 1965 the low was
a warm 63 degrees. In 1962 the high was a cool 59 degrees. In 1961 the
high was 47 with a low of 36, a cold day and year of the record
coolest high. In 1959 the high was 84 with a warm low of 64, a warm
day.
More recently, there were large spreads of 36 degrees in
1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees in 2008 (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979
(70/39) and 31 degrees in 1998 (78/47).
On the
cool side, in 1992 (O'Hare's second coolest May 26th) the high was 53 with a low of 35. Last year, in 2011, the high was 49 with a low of 43. This was only the second 40s high in O'Hare's history for the date (just 3.7% of the highs in its history and 2.8% in Chicago's history). In 1983 the high
was 60 with the record low of 34. In 2001 the high was 57 with a low
of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was
55 with a low of 46. The other cool high was 60 in 1996. The other cold
lows were 37 in 2002 and 39 in 1979. The record coolest high of 48
occurred in 1961. 22 of the last 33 lows (67%) were in the: 40s (14)
and 50s (8). There were six consecutive 40s & 50s lows from 1995 through 2000. Five of the six (83%) were in the 40s. Six lows (18%) were in the cold 30s. Our most recent 30s
low was 37 in 2002. Five lows (15%) were in the warm 60s. O'Hare's coldest May 26th was in 1961 as the high was 47 (O'Hare's coolest high of the date) with a low of 36. The other pre-1979 cold low was 39 in 1969.
There
were two instances of back-to-back years in which temperatures
were just about as opposite as they can be. In
1991 the high was 82 with a low of 69, overall 13.5 degrees ABOVE normal. Then in 1992 the high was 53 with
a low of 35, overall 18 degrees BELOW normal.
In the second instance, in 2010 the high was 87 with a low of 66,
overall 14.5 degrees ABOVE normal. Then in 2011 the high was 49 with a
low of 43, overall 16 degrees BELOW normal.
The
following
astronomical data
is
provided by
the
United
States
Naval
Observatory. In
Crystal
Lake,
twilight begins
at 4:49 and
sunrise is
at 5:23.
Sunset is at 20:19
and
twilight
ends at 20:52.
There's
a total
of 14 hours, 56 minutes of
daylight
today
and 16
hours, 3
minutes between
twilights.
We gained a minute of
daylight from
yesterday. Tomorrow
twilight
begins
at 4:49 and sunrise
is at 5:22.
The
moon is waxing crescent, heading towards the first quarter in two days at 15:16.
Illumination
was 24% at
midnight, will be
29% at noon
and 33% at
midnight
tonight.
Moonrise was at 10:27 this morning. Moonset is at 0:23 tomorrow morning. Moonrise is at 11:31 tomorrow morning. Moonlight
time is 13 hours, 33 minutes which is 54 minutes shorter than yesterday.
Spring
began on March 12th and runs
for 84
days
through June 3rd. Warm Spring began on April 13th and
runs for 52
days through June 3rd. High
temperatures
in
this
period
are
usually in
the 50s, 60s and
70s. Highs in
the 80s and 90s occur
infrequently. Memorial Day is in two days.
Showing posts with label May 26. Show all posts
Showing posts with label May 26. Show all posts
Sunday, May 27, 2012
Thursday, May 26, 2011
May 26: ORD
Today is May 26th. It's the 146th day of the year. 219 days remain. It's week 21 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 73 and the normal low is 51. I've calculated the 32-year averages at 71 and 49.
On the warm side, last year, in 2010, the high was 87 with a low of 66. In 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. The record high of 94 was set back in 1911 and the record warmest low of 75 occurred in 1914. 22 of the past 32 highs (69%) were in the: 60s (9) and 70s (13). Six highs (19%) were in the warmer 80s. Four highs (12%) were in the cool 50s. Our most recent 50s high was 57 in 2001. There seems to be a distinction in terms of the eras of the 80s highs. The first three happened between 1985 and 1991. The second three happened between 2006 and last year, 2010. This year an 80 won't occur, in fact a cool 50s high is forecast.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was a cool 54 with a low of 43, a cool day. In 1969 the high was 74 with a cold low of 39, a 35 degree spread. In 1967 the high was a hot 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1965 the low was a warm 63 degrees. In 1962 the high was a cool 59 degrees. In 1961 the high was 47 with a low of 36, a cold day and year of the record coolest high. In 1959 the high was 84 with a warm low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees three years ago (in 2008) (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 occurred in 1961. 21 of the last 32 lows (66%) were in the: 40s (13) and 50s (8). Six lows (19%) were in the cold 30s. Our most recent 30s low was 37 in 2002. Five lows (15%) were in the warmer 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 4:50 and sunrise is at 5:23. Sunset is at 20:18 and twilight ends at 20:51. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 1 minute between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. The moon is waning crescent, having reached last quarter two days ago at 13:52. Illumination was 36% at midnight, will be 32% at noon and 27% at midnight tonight. Moonrise is at 1:54 this morning. Moonset is at 14:33 this afternoon. Moonrise is at 2:18 tomorrow morning. Moonlight time is 12 hours, 39 minutes which is 36 minutes longer than yesterday.
The warm part of Spring (Warm Spring) began on April 13. Warm Spring runs for 52 days, through June 3. High temperatures in this period are usually in the 50s, 60s and 70s. Warmer 80s and 90s occur infrequently. Memorial Day is in four 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 73 and the normal low is 51. I've calculated the 32-year averages at 71 and 49.
On the warm side, last year, in 2010, the high was 87 with a low of 66. In 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. The record high of 94 was set back in 1911 and the record warmest low of 75 occurred in 1914. 22 of the past 32 highs (69%) were in the: 60s (9) and 70s (13). Six highs (19%) were in the warmer 80s. Four highs (12%) were in the cool 50s. Our most recent 50s high was 57 in 2001. There seems to be a distinction in terms of the eras of the 80s highs. The first three happened between 1985 and 1991. The second three happened between 2006 and last year, 2010. This year an 80 won't occur, in fact a cool 50s high is forecast.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was a cool 54 with a low of 43, a cool day. In 1969 the high was 74 with a cold low of 39, a 35 degree spread. In 1967 the high was a hot 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1965 the low was a warm 63 degrees. In 1962 the high was a cool 59 degrees. In 1961 the high was 47 with a low of 36, a cold day and year of the record coolest high. In 1959 the high was 84 with a warm low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees three years ago (in 2008) (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 occurred in 1961. 21 of the last 32 lows (66%) were in the: 40s (13) and 50s (8). Six lows (19%) were in the cold 30s. Our most recent 30s low was 37 in 2002. Five lows (15%) were in the warmer 60s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 4:50 and sunrise is at 5:23. Sunset is at 20:18 and twilight ends at 20:51. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 1 minute between twilights. We gained two minutes of daylight from yesterday. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. The moon is waning crescent, having reached last quarter two days ago at 13:52. Illumination was 36% at midnight, will be 32% at noon and 27% at midnight tonight. Moonrise is at 1:54 this morning. Moonset is at 14:33 this afternoon. Moonrise is at 2:18 tomorrow morning. Moonlight time is 12 hours, 39 minutes which is 36 minutes longer than yesterday.
The warm part of Spring (Warm Spring) began on April 13. Warm Spring runs for 52 days, through June 3. High temperatures in this period are usually in the 50s, 60s and 70s. Warmer 80s and 90s occur infrequently. Memorial Day is in four days.
Wednesday, May 26, 2010
May 26: ORD
Today is May 26th. It's the 146th day of the year. 219 days remain. It's week 21 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 73 and the normal low is 51. I've calculated the 31-year averages at 70 and 48.
On the warm side, in 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. Rounding out the highs in the 80s, it was 83 in 2006 and 81 two years ago. The record high of 94 was set back in 1911 and the record warmest low of 75 was set back in 1914. 22 of the last 31 highs (71%) have been: 60s (9) and 70s (13). Five highs were in the warmer 80s. Four highs were in the cooler 50s.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was a cool 54 with a low of 43, a cool day. In 1969 the high was 74 with a low of 39, a 35 degree spread. In 1967 the high was a hot 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1965 the low was a warm 63. In 1962 the high was a cool 59. In 1961 the high was 47 with a low of 36, a cold day and year of the record coolest high. In 1959 the high was 84 with a low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees two years ago (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 was set in 1961. 13 of the last 31 lows were in the 40s. Six lows were in the colder 30s and 12 lows were in the warmer: 50s (8) and 60s (4).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:50 and sunrise was at 5:23. Sunset is at 20:18 and twilight ends at 20:52. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 2 minutes between twilights. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. The moon is waxing gibbous, heading towards the full Flower moon tomorrow at 18:07. Illumination was 96% at midnight, will be 98% at noon and 99% at midnight tonight. Moonset was at 4:03 this morning. Moonrise is at 19:27 this evening. Moonset is 4:45 tomorrow morning. Moonlight time is 8 hours, 36 minutes which is 35 minutes shorter than yesterday.
Memorial Day is in five 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 73 and the normal low is 51. I've calculated the 31-year averages at 70 and 48.
On the warm side, in 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. Rounding out the highs in the 80s, it was 83 in 2006 and 81 two years ago. The record high of 94 was set back in 1911 and the record warmest low of 75 was set back in 1914. 22 of the last 31 highs (71%) have been: 60s (9) and 70s (13). Five highs were in the warmer 80s. Four highs were in the cooler 50s.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was a cool 54 with a low of 43, a cool day. In 1969 the high was 74 with a low of 39, a 35 degree spread. In 1967 the high was a hot 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1965 the low was a warm 63. In 1962 the high was a cool 59. In 1961 the high was 47 with a low of 36, a cold day and year of the record coolest high. In 1959 the high was 84 with a low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees two years ago (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 was set in 1961. 13 of the last 31 lows were in the 40s. Six lows were in the colder 30s and 12 lows were in the warmer: 50s (8) and 60s (4).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:50 and sunrise was at 5:23. Sunset is at 20:18 and twilight ends at 20:52. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 2 minutes between twilights. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. The moon is waxing gibbous, heading towards the full Flower moon tomorrow at 18:07. Illumination was 96% at midnight, will be 98% at noon and 99% at midnight tonight. Moonset was at 4:03 this morning. Moonrise is at 19:27 this evening. Moonset is 4:45 tomorrow morning. Moonlight time is 8 hours, 36 minutes which is 35 minutes shorter than yesterday.
Memorial Day is in five days. - Bernie -
Tuesday, May 26, 2009
May 26: ORD
Today is May 26th. It's the 146th day of the year. 219 days remain. It's week 21 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 73 and the normal low is 51. I've calculated the 30-year averages at 70 and 48.
On the warm side, in 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. Rounding out the highs in the 80s, it was 83 in 2006 and 81 last year. The record high of 94 was set back in 1911 and the record warmest low of 75 was set back in 1914. 21 of the last 30 highs have been: 60s (9) and 70s (12). Five highs were in the warmer 80s. Four highs have been in the cooler 50s.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was 54 with a low of 43, a cool day. In 1969 the high was 74 with a low of 39, a 35 degree spread. In 1967 the high was 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1961 the high was 47 with a low of 36, a cold day. In 1959 the high was 84 with a low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees last year (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 was set in 1961. 13 of the last 30 lows were in the 40s. Six low were in the colder 30s and 11 lows were in the warmer: 50s (7) and 60s (4).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:50 and sunrise was at 5:23. Sunset is at 20:18 and twilight ends at 20:52. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 2 minutes between twilights. The moon is waxing crescent, having passed new two days ago at 7:11. Illumination was 4% at midnight, will be 7% at noon and 11% at midnight tonight. Moonrise is at 7:08. Moonset is at 23:08. Moonrise is at 8:24 tomorrow. Moonlight time is 16 hours which is 14 minutes shorter than yesterday.
My Dad will celebrate a birthday in 16 days. My cousin Tiffany celebrates a birthday in 17 days. Flag day is in 19 days. Father's Day is in 26 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 73 and the normal low is 51. I've calculated the 30-year averages at 70 and 48.
On the warm side, in 1985 the high was 89 with a low of 62. In 1991 the high was 82 with a low of 69. In 1987 the high was 86 with a low of 61. Rounding out the highs in the 80s, it was 83 in 2006 and 81 last year. The record high of 94 was set back in 1911 and the record warmest low of 75 was set back in 1914. 21 of the last 30 highs have been: 60s (9) and 70s (12). Five highs were in the warmer 80s. Four highs have been in the cooler 50s.
In looking back through the years to the first May at O'Hare in 1959, the following instances were notable: In 1978 the high was 87 with a low of 65, a hot day. In 1971 the high was 54 with a low of 43, a cool day. In 1969 the high was 74 with a low of 39, a 35 degree spread. In 1967 the high was 92 with a low of 61, a 31 degree spread and hot day. In 1966 the high was 82 with a low of 49, a 33 degree spread. In 1961 the high was 47 with a low of 36, a cold day. In 1959 the high was 84 with a low of 64, a warm day.
More recently, there were large spreads of 36 degrees in 1988 (78/42), 36 degrees in 2002 (73/37), 34 degrees last year (81/47), 33 degrees in 1993 (78/45), 31 degrees in 1979 (70/39) and 31 degrees in 1998 (78/47).
On the cool side, in 1992 the high was 53 with a low of 35. In 1983 the high was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. In 1997 the high was 55 with a low of 46. Another cool high was 60 in 1996. The other 30s lows were 37 in 2002 and 39 in 1979. The record coolest high of 48 was set in 1961. 13 of the last 30 lows were in the 40s. Six low were in the colder 30s and 11 lows were in the warmer: 50s (7) and 60s (4).
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight began at 4:50 and sunrise was at 5:23. Sunset is at 20:18 and twilight ends at 20:52. Tomorrow twilight begins at 4:49 and sunrise is at 5:22. There's a total of 14 hours, 55 minutes of daylight today and 16 hours, 2 minutes between twilights. The moon is waxing crescent, having passed new two days ago at 7:11. Illumination was 4% at midnight, will be 7% at noon and 11% at midnight tonight. Moonrise is at 7:08. Moonset is at 23:08. Moonrise is at 8:24 tomorrow. Moonlight time is 16 hours which is 14 minutes shorter than yesterday.
My Dad will celebrate a birthday in 16 days. My cousin Tiffany celebrates a birthday in 17 days. Flag day is in 19 days. Father's Day is in 26 days. -Bernie-
Monday, May 26, 2008
May 26: ORD
Today is May 26th. It's the 147th day of the year. 219 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 1979 and 2007. Observations have been official at O'Hare since Jan. 17, 1980.
Before this, Midway International Airport (MDW) was the official station of record from Wed. July 1, 1942 to Thu. Jan. 17, 1980. Before July 1, 1942, records were official at various locations in the city going all the way back to Mon. Oct. 16, 1871. Records before this (back to Sat. Oct. 15, 1870) were lost during the Great Chicago Fire which began on the evening of Sun. Oct. 8, 1871.
According to the National Climatic Data Center (NCDC), the normal high is 73 and the normal low is 51. The 29-year averages are 70 and 48.
On the cool side, the high in 1992 was 53 with a low of 35. The high in 1983 was 60 with the record low of 34. In 2001 the high was 57 with a low of 38. In 1994 the high was 59 with a low of 37. Other cool highs include 60 in 1996 and 55 in 1997. Other 30s lows include 37 in 2002 and 39 in 1979. The record coolest high of 48 was set in 1961. 12 of the 29 lows so far have been in the 40s.
The following astronomical data is provided by the United States Naval Observatory. In Crystal Lake, twilight begins at 4:49 and sunrise is at 5:23. Sunset is at 20:19 and twilight ends at 20:52. There's a total of 14 hours, 56 minutes of sunlight and 16 hours, 3 minutes between twilights. The moon is waning gibbous with 69% visible at midnight and 64% visible at noon. Moonrise is at 0:48 and moonset is at 11:00. Moonrise is at 1:12 tomorrow. Moonlight time is 10 hours, 12 minutes today. The moon is waning gibbous and will reach the last quarter on Tuesday at 21:57.
Happy Memorial Day to everyone and especially to those who gave their lives, who are currently serving our country and those who have served. We enjoy our freedoms because of these brave souls. I can't thank you enough! My Dad turns 68 in 16 days. Happy Birthday Dad!
- Bernie -
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