673
NOUS43 KARX 011547
PNSARX
IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-032>034-
041>044-053>055-061-020310-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1047 AM CDT THU OCT 1 2026
...SEPTEMBER 2026 WAS WARMER (14TH WARMEST) AND WETTER (16TH
WETTEST) THAN NORMAL FOR ROCHESTER, MN...
..SEPTEMBER 2026 HIGHLIGHTS
TEMPERATURES - 14TH WARMEST
DURING SEPTEMBER 2026, THE AVERAGE TEMPERATURE AT ROCHESTER
INTERNATIONAL AIRPORT WAS 64.2°F.
THIS WAS 3.1°F WARMER THAN THE 1991-2020 AVERAGE OF 61.1°F.
THIS WAS THE 14TH WARMEST SEPTEMBER.
DURING THE PAST 12 SEPTEMBERS, 5 OUT OF THE 10 WARMEST SEPTEMBERS
HAVE OCCURRED.
16 OUT OF 26 WARMEST SEPTEMBERS HAVE OCCURRED SINCE 2004. THIS
INCLUDES THE 3RD WARMEST (2023 - 66.3°F), 4TH WARMEST (2015 -
66.2°F), 5TH WARMEST (2024 - 65.4°F), 8TH WARMEST (2019 - 65.1°F),
9TH WARMEST (2005 - 64.7°F), 10TH WARMEST (TIED WITH 2004, 2016, AND
2025 - 64.4°F), 14TH WARMEST (2026 - 64.2°F), 15TH WARMEST (2017 -
64.1°F), 16TH WARMEST (2013 - 64°F), 19TH WARMEST (2007 - 63.9°F),
23RD WARMEST (2018 AND 2021 - 63.1°F), AND 25TH WARMEST (2008 AND
2009 - 62.6°F).
BELOW ARE THE 20 WARMEST SEPTEMBERS.
20 WARMEST SEPTEMBERS
IN ROCHESTER MN
1886-2026
AVERAGE
RANK TEMPERATURE YEAR
---- ----------- ----
1 69.6°F 1908
2 66.9°F 1931
3 66.3°F 2023
4 66.2°F 2015
5 65.4°F 2024
6 65.3°F 1948
7 65.2°F 1933
8 65.1°F 2019
9 64.7°F 2005
10 64.4°F 2025
64.4°F 2016
64.4°F 2004
64.4°F 1998
14 64.2°F 2026
15 64.1°F 2017
16 64.0°F 2013
64.0°F 1939
64.0°F 1919
19 63.9°F 2007
20 63.7°F 1978
THE AVERAGE HIGH TEMPERATURE WAS 71.8°F. THIS WAS THE SAME AS THE
1991-2020 NORMAL OF 71.8°F.
THE AVERAGE LOW TEMPERATURE WAS 56.6°F. THIS WAS 6.2°F WARMER THAN
THE 1991-2020 NORMAL OF 50.4°F. THIS WAS THE 2ND WARMEST. ONLY 1908
WAS WARMER WITH AN AVERAGE OF 57.3°F
THE WARMEST HIGH TEMPERATURE WAS 89°F ON SEPTEMBER 4.
THE COLDEST HIGH TEMPERATURE WAS 59°F ON SEPTEMBER 21.
THE WARMEST LOW TEMPERATURE WAS 71°F ON SEPTEMBER 4.
THE COLDEST LOW TEMPERATURE WAS 45°F ON SEPTEMBER 14 AND SEPTEMBER
23.
RAINFALL - 16TH WETTEST
A TOTAL OF 6.22 INCHES OF RAIN FELL.
THIS WAS 2.62 INCHES WETTER THAN THE 1991-2020 AVERAGE OF 3.60
INCHES.
THIS WAS THE 16TH WETTEST SEPTEMBER.
BELOW ARE THE 20 WETTEST SEPTEMBERS IN ROCHESTER, MN.
20 WETTEST SEPTEMBERS
IN ROCHESTER MN
1886-2026
RANK RAINFALL YEAR
---- -------- ----
1 10.50 INCHES 1986
2 9.95 INCHES 2010
3 9.10 INCHES 2016
4 8.35 INCHES 2019
5 8.08 INCHES 1978
6 7.95 INCHES 1938
7 7.58 INCHES 2018
8 7.50 INCHES 1942
9 7.40 INCHES 2007
10 7.13 INCHES 2005
11 7.06 INCHES 1972
12 6.47 INCHES 1946
13 6.41 INCHES 1985
14 6.32 INCHES 2041
15 6.26 INCHES 1965
16 6.22 INCHES 2026
17 5.99 INCHES 1964
18 5.88 INCHES 1934
19 5.84 INCHES 1973
20 5.80 INCHES 2004
THE WETTEST DAY OCCURRED ON SEPTEMBER 18 WHEN 2.35 INCHES OF RAIN
FELL.
MEASURABLE RAIN FELL ON 12 DAYS (40 PERCENT) AND TRACE AMOUNTS FELL
ON ANOTHER 5 DAYS (16.7 PERCENT).
..SEPTEMBER 2026 RECORDS
SEPTEMBER 4 - RECORD WARM LOW - 71°F - PREVIOUS RECORD WAS 70°F IN 2015
SEPTEMBER 18 - RECORD RAIN - 2.35 INCHES - PREVIOUS RECORD WAS 1.26 INCHES IN 2003
..LOOKING AHEAD TO OCTOBER
THE NORMAL HIGH TEMPERATURE IN ROCHESTER STARTS OFF AT 66°F ON
OCTOBER 1ST AND FALLS TO 50°F BY THE END OF THE MONTH. THE NORMAL
LOW TEMPERATURE STARTS OFF AT 44°F ON THE 1ST AND FALLS TO 32°F BY
THE END OF THE MONTH. THE WARMEST OCTOBER TEMPERATURE ON RECORD WAS
93°F ON OCTOBER 3, 1997, AND THE COLDEST WAS -6°F ON OCTOBER 25,
1887.
THE NORMAL MEAN TEMPERATURE FOR OCTOBER IS 47.9°F. ROCHESTER’S
WARMEST OCTOBER OCCURRED IN 1963 WITH AN AVERAGE TEMPERATURE OF
58.1°F, AND ITS COLDEST OCTOBER OCCURRED IN 1917 WITH AN AVERAGE
TEMPERATURE OF 37.6°F.
THE NORMAL OCTOBER PRECIPITATION IS 2.43 INCHES. THE WETTEST OCTOBER
OCCURRED IN 1911 WITH 9.11 INCHES OF PRECIPITATION AND THE DRIEST
OCTOBER OCCURRED IN 1952 WITH ONLY 0.01 INCHES OF PRECIPITATION. THE
WETTEST OCTOBER DAY OCCURRED ON OCTOBER 6, 1911, WHEN 2.85 INCHES OF
PRECIPITATION FELL. NORMALLY, THERE ARE 2 DAYS WITH THUNDERSTORMS.
THE NORMAL OCTOBER SNOWFALL IS 0.9 INCHES. THE SNOWIEST OCTOBER
OCCURRED IN 2009 WITH 7.9 INCHES OF SNOW. THE SNOWIEST OCTOBER DAY
OCCURRED ON OCTOBER 22, 1979, WHEN 5 INCHES OF SNOW FELL.
BOYNE
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