Most Monthly Precipitation in Mt. Washington History

This is a list of the largest monthly precipitation totals ever recorded in Mt. Washington, New Hampshire history from 1948–2024.

What Was the Wettest Month in Mt. Washington History?

According to NOAA records, the most precipitation that Mt. Washington, New Hampshire has ever received in a single month is 28.7 inches which occurred in October 2005.

Month to date though April 24, 2024: 5.7 inches

Mt. Washington Most Rain in One Month

Rank	Precipitation	Month
1	28.7 inches	October 2005
2	22.3 inches	February 1970
3	21.3 inches	October 1995
4	20.7 inches	August 1991
5	20.0 inches	June 1998
6	19.8 inches	February 1981
7	19.6 inches	November 1983
8	19.3 inches	May 1997
9	18.8 inches	September 1999
9	18.8 inches	May 1984
11	18.2 inches	January 1958
12	18.2 inches	January 1978
13	18.0 inches	December 1973
14	17.9 inches	May 2006
15	17.7 inches	October 2006
16	17.6 inches	November 1963
17	17.4 inches	December 1983
18	17.3 inches	June 2023
19	17.2 inches	October 1996
20	17.2 inches	February 1969