Most Monthly Precipitation in Riverside History

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

What Was the Wettest Month in Riverside History?

According to NOAA records, the most precipitation that Riverside, California has ever received in a single month is 10.1 inches which occurred in February 1998.

Month to date though April 23, 2024: 0.1 inches

Riverside Most Rain in One Month

Rank	Precipitation	Month
1	10.1 inches	February 1998
2	9.4 inches	March 1938
3	9.3 inches	January 1916
4	9.1 inches	January 1993
5	8.4 inches	January 1995
6	8.0 inches	February 1969
7	7.9 inches	December 1921
8	6.9 inches	February 2024
9	6.9 inches	December 2010
10	6.9 inches	March 1906
11	6.8 inches	January 1914
12	6.8 inches	April 1926
13	6.8 inches	January 1895
14	6.8 inches	January 1969
15	6.8 inches	December 1943
16	6.5 inches	February 2005
17	6.3 inches	February 1980
18	6.2 inches	February 1927
19	6.2 inches	February 1936
20	6.0 inches	January 2005