Most Monthly Precipitation in Granby History

This is a list of the largest monthly precipitation totals ever recorded in Granby, Quebec history from 1948–2023.

What Was the Wettest Month in Granby History?

According to NOAA records, the most precipitation that Granby, Quebec has ever received in a single month is 24.8 cm which occurred in August 1965.

Granby Most Rain in One Month

Rank	Precipitation	Month
1	24.8 cm	August 1965
2	23.6 cm	August 1984
3	23.0 cm	July 1976
4	22.1 cm	July 1974
5	22.1 cm	September 1999
6	21.9 cm	June 1978
7	21.5 cm	July 2023
8	21.3 cm	July 1994
9	20.8 cm	May 2006
10	20.5 cm	December 1983
11	20.4 cm	November 1983
12	20.2 cm	October 2019
13	20.1 cm	June 2006
14	20.0 cm	August 1963
15	19.8 cm	May 2011
16	19.6 cm	August 1955
17	19.5 cm	January 1978
18	19.3 cm	September 2013
19	19.3 cm	October 1995
20	19.2 cm	August 1981