Preliminary numbers show that July will finish as the 3rd coldest July on record for Minnesota. For some locations, this was the coldest July ever. International Falls shattered its coldest July on record with an average temperature of 58.8 degrees, which broke the old record of 59.4 degrees set in 1992. Rochester had its second coldest July on record with 65.3 degrees, second only to 64.2 degrees set in 1992. July 2009 finished as the third coldest in St. Cloud with 66 degrees.
While the Twin Cities failed to reach the top ten coldest, the monthly average of 70 degrees makes July 2009 the coldest July since 1996. The coldest July on record for the Twin Cities is 1992 with 65.8 degrees. Duluth was also not quite cool enough in July to make it into the top ten.
Below are public information statements and record event reports from the National Weather Service regarding the cold July.
PUBLIC INFORMATION STATEMENT...CORRECTED VALUE
NATIONAL WEATHER SERVICE LA CROSSE WI
650 AM CDT SAT AUG 1 2009
...SECOND COLDEST JULY IN ROCHESTER MN...
DURING JULY 2009...ROCHESTER INTERNATIONAL AIRPORT HAD AN
AVERAGE TEMPERATURE OF 65.3 DEGREES. THIS WAS 4.8
DEGREES BELOW THE NORMAL OF 70.1 DEGREES. THIS WAS
THE SECOND COLDEST JULY IN ROCHESTER.
THE COLDEST JULY OCCURRED BACK IN 1992 WHEN THE AVERAGE
TEMPERATURE WAS 64.2 DEGREES.
THE TABLE BELOW SHOWS THE COLDEST JULYS IN ROCHESTER MN...
COLDEST JULYS
IN ROCHESTER MINNESOTA
1873-2009
AVERAGE RANK TEMPERATURE YEAR
---- ----------- ----
1 64.2 DEGREES 1992
2 65.3 DEGREES 2009
3 66.8 DEGREES 1996
66.8 DEGREES 1958
5 66.9 DEGREES 1967
66.9 DEGREES 1915
7 67.0 DEGREES 1971
8 67.3 DEGREES 1994
9 67.4 DEGREES 1962
10 67.6 DEGREES 1892
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
642 AM CDT SAT AUG 1 2009
...THIRD COLDEST JULY IN LA CROSSE WI...
DURING JULY 2009...LA CROSSE MUNICIPAL AIRPORT HAD AN AVERAGE
TEMPERATURE OF 68.1 DEGREES. THIS WAS 5.9 DEGREES BELOW THE
NORMAL OF 74.0 DEGREES. THIS WAS THE THIRD COLDEST JULY IN
LA CROSSE. THE COLDEST JULY OCCURRED BACK IN 1891 WHEN THE
AVERAGE TEMPERATURE WAS 66.9 DEGREES.
THE TABLE BELOW SHOWS THE COLDEST JULYS IN LA CROSSE WI...
COLDEST JULYS
IN LA CROSSE WISCONSIN
1873-2009
AVERAGE RANK TEMPERATURE YEAR
---- ----------- ----
1 66.9 DEGREES 1891
2 68.0 DEGREES 1992
3 68.1 DEGREES 2009
4 68.4 DEGREES 1971
5 68.5 DEGREES 1962
6 68.6 DEGREES 1882
7 68.7 DEGREES 1915
8 69.0 DEGREES 1922
9 69.1 DEGREES 1924
10 69.3 DEGREES 1884
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
702 AM CDT SAT AUG 1 2009
...JULY WAS COLDER THAN JUNE IN ROCHESTER MN...
DURING JULY 2009...THE AVERAGE TEMPERATURE AT ROCHESTER
INTERNATIONAL AIRPORT WAS 65.3 DEGREES. THIS WAS SIX
TENTHS OF A DEGREE COLDER THAN JUNE. THIS IS ONLY THE
EIGHTH TIME THAT THIS HAS OCCURRED /1911...1956...1971...
AND 1991-94). THE LARGEST DIFFERENCE OCCURRED BACK IN
1971 WHEN JUNE WAS A REMARKABLE 4.4 DEGREES WARMER THAN JULY.
RECORD EVENT REPORT NATIONAL WEATHER SERVICE LA CROSSE WI
711 AM CDT SAT AUG 1 2009
...COLDEST MAXIMUM JULY TEMPERATURE EVER IN LA CROSSE WI...
DURING JULY 2009...THE WARMEST TEMPERATURE AT LA CROSSE MUNICIPAL
AIRPORT WAS JUST 86 DEGREES ON THE 27TH. ONLY JULY 1922 /ALSO 86
DEGREES/ FAILED TO HAVE A WARMER TEMPERATURE IN A JULY.
IN ADDITION...JULY 2009 WAS ONLY THE ELEVENTH JULY SINCE 1873 TO FAIL
TO HAVE AT LEAST ONE 90 DEGREE DAY. THE LAST TIME THIS OCCURRED WAS
BACK IN 1993 WHEN THE WARMEST TEMPERATURE OF THE MONTH WAS 87 DEGREES.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
635 AM CDT SAT AUG 1 2009
...ONE OF THE COOLEST JULYS ON RECORD IN THE AREA...
AT THE REGULAR REPORTING CLIMATE SITES OF SIOUX FALLS...
SIOUX CITY...AND HURON...JULY AVERAGED OUT WITHIN THE
TOP FIVE COOLEST JULYS ON RECORD...GOING BACK TO THE
LATE 1800S. THE FOLLOWING
ARE THE STATISTICS FOR EACH SITE...
AT SIOUX FALLS...IT WAS THE 4TH COOLEST JULY ON RECORD
WITH AN AVERAGE TEMPERATURE OF 68.6 DEGREES OR 4.4 DEGREES BELOW NORMAL.
THE AVERAGE DAILY HIGH OF 79.5 DEGREES TIED THE YEAR OF 1950 FOR
THE THIRD COOLEST AVERAGE MAXIMUM ON RECORD IN JULY. THE
COOLEST JULY ON RECORD WAS IN 1992 WITH A CHILLY AVERAGE OF 65.5 DEGREES.
AT SIOUX CITY...IT WAS THE 5TH COOLEST JULY ON RECORD
WITH AN AVERAGE TEMPERATURE OF 70.2 DEGREES... 4.4 DEGREES BELOW NORMAL.
MOST OF THIS WAS DUE TO THE AVERAGE DAILY LOW OF 58.7 DEGREES...
WHICH WAS THE SECOND COOLEST AVERAGE MINIMUM ON RECORD IN JULY.
THE COOLEST JULY ON RECORD WAS IN 1992 WITH AN AVERAGE OF 68.6 DEGREES.
AT HURON...IT WAS ALSO THE 5TH COOLEST JULY ON RECORD WITH
AN AVERAGE TEMPERATURE OF 68.5 DEGREES OR 4.9 DEGREES BELOW NORMAL.
THE COOLEST JULY ON RECORD WAS AGAIN IN THE VERY COOL JULY OF
1992 WITH AN AVERAGE OF 65.1 DEGREES.
Last modified: December 29, 2016
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