Most Monthly Precipitation in Oshkosh History

This is a list of the largest monthly precipitation totals ever recorded in Oshkosh, Wisconsin history from 1893–2024.

What Was the Wettest Month in Oshkosh History?

According to NOAA records, the most precipitation that Oshkosh, Wisconsin has ever received in a single month is 11.9 inches which occurred in August 1924.

Month to date though April 27, 2024: 2.9 inches

Oshkosh Most Rain in One Month

Rank	Precipitation	Month
1	11.9 inches	August 1924
2	11.9 inches	June 2008
3	11.9 inches	July 2010
4	11.5 inches	September 1986
5	10.9 inches	August 1995
6	10.6 inches	June 1993
7	10.4 inches	June 1914
8	10.0 inches	September 1938
9	9.8 inches	June 1905
10	9.7 inches	June 2014
11	9.5 inches	August 1940
12	9.1 inches	June 1940
13	9.0 inches	May 2004
14	8.9 inches	August 2021
15	8.8 inches	September 1915
16	8.5 inches	August 1975
17	8.5 inches	August 1990
18	8.4 inches	September 1965
19	8.4 inches	July 1986
20	8.0 inches	May 2012