Most Monthly Precipitation in San Luis Obispo History

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

What Was the Wettest Month in San Luis Obispo History?

According to NOAA records, the most precipitation that San Luis Obispo, California has ever received in a single month is 24.6 inches which occurred in January 1969.

Month to date though April 22, 2024: 2.2 inches

San Luis Obispo Most Rain in One Month

Rank	Precipitation	Month
1	24.6 inches	January 1969
2	18.6 inches	January 1916
3	16.7 inches	January 1914
4	16.5 inches	March 1995
5	16.1 inches	January 1995
6	15.8 inches	January 1978
7	15.6 inches	January 1911
8	15.6 inches	January 1909
9	15.2 inches	February 1969
10	14.4 inches	December 1931
11	14.4 inches	February 1998
12	14.0 inches	February 1962
13	13.8 inches	January 1973
14	13.3 inches	January 1997
15	13.3 inches	March 1911
16	13.0 inches	December 2010
17	12.8 inches	March 1991
18	12.0 inches	February 1936
19	12.0 inches	February 1938
20	11.9 inches	February 1980