Most Monthly Precipitation in Tillamook History

This is a list of the largest monthly precipitation totals ever recorded in Tillamook, Oregon history from 1948–2022.

What Was the Wettest Month in Tillamook History?

According to NOAA records, the most precipitation that Tillamook, Oregon has ever received in a single month is 29.0 inches which occurred in December 2015.

Tillamook Most Rain in One Month

Rank	Precipitation	Month
1	29.0 inches	December 2015
2	25.9 inches	November 2006
3	25.4 inches	November 1999
4	25.3 inches	January 1964
5	25.1 inches	January 1971
6	24.1 inches	November 1995
7	23.8 inches	January 2006
8	23.1 inches	January 1965
9	23.0 inches	December 1994
10	22.9 inches	February 1961
11	22.8 inches	October 2016
12	22.7 inches	February 1999
13	22.5 inches	December 2012
14	22.4 inches	December 1971
15	22.4 inches	December 1970
16	22.2 inches	December 1998
17	22.2 inches	December 1996
18	22.1 inches	November 1973
19	21.6 inches	February 1996
20	21.4 inches	January 1990