Most Monthly Precipitation in Amherst History

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

What Was the Wettest Month in Amherst History?

According to NOAA records, the most precipitation that Amherst, Massachusetts has ever received in a single month is 17.2 inches which occurred in October 2005.

Month to date though April 22, 2024: 3.2 inches

Amherst Most Rain in One Month

Rank	Precipitation	Month
1	17.2 inches	October 2005
2	16.1 inches	August 1955
3	14.6 inches	September 1938
4	13.9 inches	July 1897
5	13.2 inches	September 1999
6	13.1 inches	July 2023
7	12.3 inches	September 1933
8	12.0 inches	May 1984
9	11.9 inches	July 2021
10	10.9 inches	October 1995
11	10.6 inches	February 2008
12	10.6 inches	July 1975
13	10.3 inches	June 1972
14	10.1 inches	August 2011
15	9.9 inches	September 2004
16	9.7 inches	June 1922
17	9.5 inches	September 1934
18	9.4 inches	June 2013
19	9.2 inches	September 2018
20	9.1 inches	July 1915