Most Monthly Precipitation in Seneca History

This is a list of the largest monthly precipitation totals ever recorded in Seneca, Oregon history from 1908–2021.

What Was the Wettest Month in Seneca History?

According to NOAA records, the most precipitation that Seneca, Oregon has ever received in a single month is 5.0 inches which occurred in January 1970.

Seneca Most Rain in One Month

Rank	Precipitation	Month
1	5.0 inches	January 1970
2	5.0 inches	December 1996
3	4.6 inches	December 1983
4	4.5 inches	May 2015
5	4.4 inches	May 1998
6	4.1 inches	June 1964
7	4.1 inches	June 1982
8	4.0 inches	May 1989
9	3.9 inches	December 1981
10	3.8 inches	December 1964
11	3.8 inches	May 1991
12	3.7 inches	May 2011
13	3.7 inches	August 1965
14	3.7 inches	June 1913
15	3.6 inches	October 1962
16	3.6 inches	March 1983
17	3.5 inches	September 1959
18	3.4 inches	March 1995
19	3.4 inches	November 1910
20	3.4 inches	January 1936