Most Monthly Precipitation in Santa Rosa History

This is a list of the largest monthly precipitation totals ever recorded in Santa Rosa, California history from 1902–2024.

What Was the Wettest Month in Santa Rosa History?

According to NOAA records, the most precipitation that Santa Rosa, California has ever received in a single month is 19.4 inches which occurred in February 1998.

Santa Rosa Most Rain in One Month

Rank	Precipitation	Month
1	19.4 inches	February 1998
2	19.0 inches	January 2017
3	18.5 inches	January 1909
4	18.0 inches	December 2005
5	17.9 inches	December 1955
6	17.1 inches	January 1995
7	17.0 inches	February 2019
8	15.9 inches	February 1986
9	15.9 inches	January 1970
10	15.7 inches	March 1983
11	15.4 inches	January 1973
12	15.2 inches	January 1916
13	14.9 inches	December 2002
14	14.7 inches	December 1952
15	14.7 inches	February 2017
16	14.5 inches	December 2014
17	14.4 inches	February 1925
18	14.2 inches	January 1911
19	14.0 inches	January 1914
20	13.7 inches	March 1991