Most Monthly Precipitation in Hyannis History

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

What Was the Wettest Month in Hyannis History?

According to NOAA records, the most precipitation that Hyannis, Massachusetts has ever received in a single month is 14.1 inches which occurred in August 1946.

Month to date though April 16, 2024: 2.4 inches

Hyannis Most Rain in One Month

Rank	Precipitation	Month
1	14.1 inches	August 1946
2	13.7 inches	September 1996
3	13.2 inches	September 1933
4	11.0 inches	September 2021
5	10.7 inches	January 2023
6	10.3 inches	June 2006
7	10.2 inches	August 1985
8	10.0 inches	July 1984
9	9.9 inches	December 2019
10	9.7 inches	August 1955
11	9.6 inches	May 1901
12	9.5 inches	March 1983
13	9.4 inches	October 1996
14	9.2 inches	September 1972
15	9.2 inches	January 1915
16	9.1 inches	February 1969
17	9.1 inches	May 1967
18	9.1 inches	November 2018
19	9.1 inches	June 2013
20	8.9 inches	October 1908