900
NOUS43 KARX 011534
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
1035 AM CDT THU OCT 1 2026
...SEPTEMBER 2026 WAS WARMER (20TH WARMEST) AND WETTER (TIED FOR
15TH WETTEST) THAN NORMAL FOR LA CROSSE, WI...
..SEPTEMBER 2026 HIGHLIGHTS
TEMPERATURES - TIED FOR THE 20TH WARMEST
DURING SEPTEMBER 2026, THE AVERAGE TEMPERATURE AT LA CROSSE REGIONAL
AIRPORT WAS 66.7°F.
THIS WAS 1.9°F WARMER THAN THE 1991-2020 AVERAGE OF 64.8°F.
THIS SEPTEMBER WAS TIED WITH 1906 FOR THE 20TH WARMEST SEPTEMBER.
DURING THE PAST 12 YEARS, 6 OUT OF THE 10 WARMEST SEPTEMBERS HAVE
OCCURRED.
12 OUT OF 20 WARMEST SEPTEMBERS HAVE OCCURRED SINCE 2004. THIS
INCLUDES THE WARMEST (2015 - 69.3°F), 2ND WARMEST (2019 - 69.1°F),
3RD WARMEST (2017 - 68.8°F), 5TH WARMEST (2023 - 68.6°F), 8TH
WARMEST (2024 - 68°F), 11TH WARMEST (2016 - 67.7°F), 14TH WARMEST
(2004 & 2021 - 67.2°F), 16TH WARMEST (2005 - 67.1°F), 17TH WARMEST
(2013 - 67°F), 19TH WARMEST (2025 - 66.8°F), AND 20TH WARMEST (2026 -
66.7°F).
BELOW ARE THE 20 WARMEST SEPTEMBERS IN LA CROSSE, WI.
20 WARMEST SEPTEMBERS
IN LA CROSSE, WI
1873-2026
AVERAGE
RANK TEMPERATURE YEAR
---- ----------- ----
1 69.3°F 2015
2 69.1°F 2019
3 68.8°F 2017
68.8°F 1998
5 68.6°F 2023
6 68.5°F 1931
7 68.3°F 1978
8 68.0°F 2024
9 67.9°F 1908
10 67.8°F 1897
11 67.7°F 2016
12 67.6°F 1895
13 67.4°F 1891
14 67.2°F 2021
67.2°F 2004
16 67.1°F 2005
17 67.0°F 2013
67.0°F 1884
19 66.8°F 2025
20 66.7°F 2026
THE AVERAGE HIGH TEMPERATURE WAS 74.9°F. THIS WAS 0.6°F COOLER THAN
THE 1991-2020 NORMAL OF 75.5°F.
THE AVERAGE LOW TEMPERATURE WAS 58.4°F. THIS WAS 4.3°F WARMER THAN
THE 1991-2020 NORMAL OF 54.1°F. THIS WAS THE 6TH WARMEST.
THE WARMEST HIGH TEMPERATURE WAS 90°F ON SEPTEMBER 1.
THE COLDEST HIGH TEMPERATURE WAS 63°F ON SEPTEMBER 21 AND SEPTEMBER
27.
THE WARMEST LOW TEMPERATURE WAS 74°F ON SEPTEMBER 4.
THE COLDEST LOW TEMPERATURE WAS 44°F ON SEPTEMBER 23.
RAINFALL - TIED FOR THE 15TH WETTEST WITH 1992
A TOTAL OF 7.01 INCHES OF RAIN FELL.
THIS WAS 3.38 INCHES WETTER THAN THE 1991-2020 AVERAGE OF 3.63
INCHES.
THIS WAS TIED WITH 1992 THE 15TH WETTEST SEPTEMBER.
BELOW ARE THE 20 WETTEST SEPTEMBERS IN LA CROSSE, WI.
20 WETTEST SEPTEMBERS
IN LA CROSSE, WI
1873-2026
RANK RAINFALL YEAR
---- -------- ----
1 10.87 INCHES 2015
2 10.52 INCHES 1965
3 10.46 INCHES 2016
4 10.01 INCHES 1884
5 9.84 INCHES 1901
6 9.04 INCHES 1934
7 8.51 INCHES 1980
8 8.10 INCHES 1986
9 7.60 INCHES 1908
10 7.40 INCHES 1946
11 7.34 INCHES 1941
12 7.15 INCHES 1925
13 7.11 INCHES 1906
14 7.03 INCHES 2010
15 7.01 INCHES 2026
7.01 INCHES 1992
16 6.97 INCHES 2026
17 6.92 INCHES 2005
18 6.86 INCHES 1942
19 6.77 INCHES 2019
20 6.72 INCHES 1972
THE WETTEST DAY OCCURRED ON SEPTEMBER 18 WHEN 2.20 INCHES OF RAIN
FELL.
MEASURABLE RAIN FELL ON 14 DAYS (46.7 PERCENT) AND TRACE AMOUNTS
FELL ON ANOTHER 4 DAYS (13.3 PERCENT).
..SEPTEMBER 2026 RECORDS
SEPTEMBER 4 - RECORD WARM LOW - 74°F - PREVIOUS RECORD WAS 73°F IN 1960 AND 2014
SEPTEMBER 18 - RAINFALL - 2.20 INCHES - PREVIOUS RECORD WAS 1.60 INCHES IN 1942
..LOOKING AHEAD TO OCTOBER
THE NORMAL HIGH TEMPERATURE IN LA CROSSE STARTS OFF AT 69°F ON
OCTOBER 1ST AND FALLS TO 54°F BY THE END OF THE MONTH. THE NORMAL
LOW TEMPERATURE STARTS OFF AT 47°F ON THE 1ST AND FALLS TO 36°F BY
THE END OF THE MONTH. THE WARMEST OCTOBER TEMPERATURE ON RECORD IS
93°F ON OCTOBER 6, 1963, AND THE COLDEST IS 6°F ON OCTOBER 25, 1887.
THE NORMAL MEAN TEMPERATURE FOR OCTOBER IS 51.7°F. LA CROSSE’S
WARMEST OCTOBER OCCURRED IN 1963 WITH AN AVERAGE TEMPERATURE OF
61.2°F, AND ITS COLDEST OCTOBER OCCURRED IN 1917 WITH AN AVERAGE
TEMPERATURE OF 39.4°F.
THE NORMAL OCTOBER PRECIPITATION IS 2.49 INCHES. THE WETTEST OCTOBER
OCCURRED IN 1881 WITH 12.09 INCHES OF PRECIPITATION (SECOND WETTEST
MONTH - ONLY AUGUST 2007 WAS WETTER WITH 13.75 INCHES) AND THE
DRIEST OCTOBER OCCURRED IN 1952 WITH ONLY 0.02 INCHES OF
PRECIPITATION (THIRD DRIEST MONTH - ONLY NOVEMBER 1976 WITH A TRACE
AND DECEMBER 1943 WITH 0.01 INCHES WERE DRIER). THE WETTEST OCTOBER
DAY OCCURRED ON OCTOBER 28, 1900, WHEN 4.89 INCHES OF RAIN FELL (4TH
WETTEST CALENDAR DAY). NORMALLY, THERE ARE 2 DAYS WITH THUNDERSTORMS.
THE NORMAL OCTOBER SNOWFALL IS 0.3 INCHES. THE SNOWIEST OCTOBER
OCCURRED IN 1917 WITH 7 INCHES OF SNOW. THE SNOWIEST OCTOBER DAY
OCCURRED ON OCTOBER 28, 1917, WHEN 4.7 INCHES OF SNOW FELL.
BOYNE
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