Most Monthly Precipitation in Great Falls History

This is a list of the largest monthly precipitation totals ever recorded in Great Falls, Montana history from 1892–2024.

What Was the Wettest Month in Great Falls History?

According to NOAA records, the most precipitation that Great Falls, Montana has ever received in a single month is 8.1 inches which occurred in May 1953.

Month to date though April 26, 2024: 1.6 inches

Great Falls Most Rain in One Month

Rank	Precipitation	Month
1	8.1 inches	May 1953
2	8.0 inches	June 1923
3	7.7 inches	May 1927
4	7.3 inches	June 1907
5	7.1 inches	June 1892
6	6.9 inches	June 2005
7	5.9 inches	May 1902
8	5.9 inches	June 1897
9	5.8 inches	June 1909
10	5.8 inches	June 1916
11	5.6 inches	June 1906
12	5.5 inches	June 1914
13	5.5 inches	July 1909
14	5.4 inches	June 1965
15	5.3 inches	August 1933
16	5.3 inches	June 1969
17	5.3 inches	June 1943
18	5.2 inches	May 1981
19	5.2 inches	May 1962
19	5.2 inches	June 1998