Most Monthly Precipitation in Missoula History

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

What Was the Wettest Month in Missoula History?

According to NOAA records, the most precipitation that Missoula, Montana has ever received in a single month is 7.4 inches which occurred in May 1980.

Month to date though April 25, 2024: 1.1 inches

Missoula Most Rain in One Month

Rank	Precipitation	Month
1	7.4 inches	May 1980
2	6.5 inches	December 1917
3	6.4 inches	May 1901
4	6.3 inches	May 1908
5	5.5 inches	November 1927
6	4.8 inches	May 1898
7	4.8 inches	June 1907
8	4.7 inches	December 1996
9	4.6 inches	May 1915
10	4.5 inches	May 1902
11	4.2 inches	June 1998
12	4.2 inches	May 1900
12	4.2 inches	June 1958
14	4.2 inches	May 1981
15	4.2 inches	June 1969
16	4.1 inches	June 2010
17	4.1 inches	May 1948
18	4.1 inches	June 1908
19	4.0 inches	January 1907
20	3.9 inches	May 2004