Most Monthly Precipitation in Pullman History

This is a list of the largest monthly precipitation totals ever recorded in Pullman, Washington history from 1940–2024.

What Was the Wettest Month in Pullman History?

According to NOAA records, the most precipitation that Pullman, Washington has ever received in a single month is 8.6 inches which occurred in January 1953.

Pullman Most Rain in One Month

Rank	Precipitation	Month
1	8.6 inches	January 1953
2	6.5 inches	November 1958
3	6.2 inches	January 1970
4	6.2 inches	December 1964
5	6.1 inches	February 1961
6	5.7 inches	November 1960
7	5.7 inches	October 2016
8	5.7 inches	November 1973
9	5.5 inches	December 1996
10	5.3 inches	November 1994
11	5.3 inches	May 1948
12	5.3 inches	December 1998
13	5.2 inches	January 1959
14	5.2 inches	December 2015
15	5.1 inches	March 2017
16	5.1 inches	November 1942
17	5.1 inches	January 1974
18	5.0 inches	April 1958
19	5.0 inches	December 1973
20	4.9 inches	December 1951