Most Monthly Precipitation in Kennewick History

This is a list of the largest monthly precipitation totals ever recorded in Kennewick, Washington history from 1894–2024.

What Was the Wettest Month in Kennewick History?

According to NOAA records, the most precipitation that Kennewick, Washington has ever received in a single month is 3.9 inches which occurred in January 1969.

Month to date though April 25, 2024: 0.1 inches

Kennewick Most Rain in One Month

Rank	Precipitation	Month
1	3.9 inches	January 1969
2	3.6 inches	February 1940
3	3.5 inches	December 1973
4	3.4 inches	November 1897
5	3.2 inches	December 1996
6	3.1 inches	October 1947
7	3.0 inches	November 1942
8	3.0 inches	November 1926
9	2.9 inches	November 1973
10	2.8 inches	December 1964
11	2.7 inches	December 1955
12	2.6 inches	October 2016
13	2.5 inches	January 1953
14	2.5 inches	November 1966
15	2.4 inches	January 1970
16	2.4 inches	February 1916
17	2.4 inches	November 1996
18	2.4 inches	October 1950
19	2.3 inches	January 1914
19	2.3 inches	November 1921