Most Monthly Precipitation in El Cajon History

This is a list of the largest monthly precipitation totals ever recorded in El Cajon, California history from 1899–2024.

What Was the Wettest Month in El Cajon History?

According to NOAA records, the most precipitation that El Cajon, California has ever received in a single month is 16.7 inches which occurred in January 1916.

El Cajon Most Rain in One Month

Rank	Precipitation	Month
1	16.7 inches	January 1916
2	12.8 inches	February 1927
3	11.7 inches	December 1921
4	11.4 inches	January 1993
5	10.4 inches	February 1998
6	9.7 inches	March 1983
7	9.2 inches	February 1905
8	8.5 inches	March 1991
9	8.4 inches	January 1980
10	8.1 inches	March 1941
11	7.9 inches	December 2010
12	7.8 inches	March 1912
13	7.7 inches	February 1932
14	7.6 inches	December 1940
15	7.5 inches	March 1995
16	7.4 inches	February 1980
17	7.4 inches	January 1995
18	7.2 inches	November 1985
19	7.1 inches	April 1926
20	7.1 inches	January 1957