Most Monthly Precipitation in Ukiah History

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

What Was the Wettest Month in Ukiah History?

According to NOAA records, the most precipitation that Ukiah, California has ever received in a single month is 30.8 inches which occurred in January 1909.

Month to date though April 24, 2024: 1.1 inches

Ukiah Most Rain in One Month

Rank	Precipitation	Month
1	30.8 inches	January 1909
2	24.8 inches	January 1995
3	23.5 inches	January 1970
4	22.3 inches	February 1998
5	21.1 inches	December 1964
6	20.4 inches	December 1955
7	20.0 inches	December 2002
8	19.5 inches	February 1958
9	19.4 inches	February 1902
10	19.3 inches	December 2005
11	19.2 inches	January 1895
12	19.2 inches	January 1914
13	18.6 inches	March 1995
14	18.2 inches	March 1907
15	17.2 inches	February 1904
16	17.2 inches	January 1906
17	17.0 inches	February 1986
18	16.9 inches	December 1996
19	16.8 inches	January 1896
20	16.6 inches	January 1998