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Public Information Statement
National Weather Service La Crosse WI
1200 AM CDT Tue Sep 24 2024

...Astronomical Summer was Slightly Warmer and Much Wetter than the
Long-Term Average in Rochester MN...

During the astronomical summer of 2024 (June 20 through September
21), it was warmer and much wetter (14th wettest) than the long-term
average at Rochester International Airport. Records date back to
1887.

More details are listed below...

Temperatures - Slightly Warmer than Average

During astronomical summer, Rochester International Airport had an
average temperature of 68.8F. This was 0.7F warmer than the long-
term average of 68.1F.

The average maximum temperature was 79.1F. This was the same as the
average of 79.1F.

The average minimum temperature was 58.5F. This was 1.4F warmer
than the long-term average of 57.1F.

Other temperature tidbits this summer...

The hottest temperature was 91F on August 26.
The coldest high temperature was 67F on September 6.

The warmest low temperature was 71F on August 26.
The coldest temperature was 43F on September 7.

The temperature climbed to or exceeded 90F on 1 day. Normally,
there are 9 days per summer.

Rainfall - 14th Wettest

During the astronomical summer, Rochester International Airport
received 16.24 inches of rain which was 4.27 inches wetter than the
long-term normal of 11.97 inches. This was the 14th wettest
astronomical summer.

Wettest Astronomical Summers
     in Rochester MN
        1886-2024

Rank    Rainfall    Year
----    --------    ----
  1   24.13 inches  1978
  2   22.68 inches  2019
      22.68 inches  1938
  4   22.37 inches  1986
  5   21.74 inches  1942
  6   21.17 inches  2016
  7   19.99 inches  2007
  8   19.28 inches  1990
  9   18.83 inches  1981
 10   18.19 inches  1913
 11   17.58 inches  1959
 12   17.32 inches  1999
 13   17.02 inches  1951
 14   16.24 inches  2024
 15   16.08 inches  2010
 16   16.07 inches  1983
 17   15.85 inches  1952
 18   15.57 inches  2018
 19   15.29 inches  1993
 20   15.03 inches  1997

8 out of the last 11 summers have been wetter than the long-term
normal. This includes the 2nd wettest (2019 - tied with 1938), 6th
wettest (2016), 14th wettest (2024) and 18th wettest (2018).

The wettest day occurred on June 22 when 2.51 inches of rain fell.

Measurable rain fell on 31 days (33%) and trace amounts fell on
another 10 days (10.6%).

Here is a breakdown of the summer rain...

None             53 days - 56.4%
Trace            10 days - 10.6%
0.01-0.09 inches 12 days - 12.8%
0.10-0.24 inches  6 days -  6.4%
0.25-0.49 inches  1 days -  1.1%
0.50-0.99 inches  4 days -  4.3%
1.00-1.99 inches  6 days -  6.4%
2.00-2.99 inches  2 days -  2.1%
3.00 inches +     0 days -  0.0%

$$

Boyne