Most Monthly Precipitation in Green Bay History

This is a list of the largest monthly precipitation totals ever recorded in Green Bay, Wisconsin history from 1886–2024.

What Was the Wettest Month in Green Bay History?

According to NOAA records, the most precipitation that Green Bay, Wisconsin has ever received in a single month is 10.3 inches which occurred in June 1990.

Green Bay Most Rain in One Month

Rank	Precipitation	Month
1	10.3 inches	June 1990
2	9.7 inches	May 1918
3	9.5 inches	July 2010
4	9.4 inches	September 2019
5	9.0 inches	August 1975
6	8.7 inches	June 1914
7	8.5 inches	June 1967
8	8.3 inches	May 2004
9	8.3 inches	August 2021
10	8.2 inches	May 1973
11	8.0 inches	August 1985
12	7.9 inches	August 1906
13	7.8 inches	September 1965
14	7.8 inches	May 1960
15	7.6 inches	June 1969
16	7.6 inches	June 1897
17	7.5 inches	September 1986
18	7.5 inches	July 1912
19	7.3 inches	August 1980
20	7.3 inches	August 1995