Most Monthly Precipitation in Welland History

This is a list of the largest monthly precipitation totals ever recorded in Welland, Ontario history from 1872–2024.

What Was the Wettest Month in Welland History?

According to NOAA records, the most precipitation that Welland, Ontario has ever received in a single month is 24.0 cm which occurred in September 1977.

Welland Most Rain in One Month

Rank	Precipitation	Month
1	24.0 cm	September 1977
2	23.5 cm	September 1945
3	23.4 cm	November 1985
4	21.9 cm	October 1995
5	20.8 cm	June 1928
6	20.8 cm	September 1996
7	20.7 cm	July 2004
8	19.9 cm	February 1893
9	19.9 cm	July 1992
10	19.6 cm	May 1894
11	19.1 cm	October 2006
12	19.0 cm	October 1955
13	19.0 cm	May 1942
14	18.9 cm	October 1917
15	18.7 cm	October 1906
16	18.6 cm	July 1892
17	18.6 cm	November 1927
18	18.2 cm	July 1937
19	18.2 cm	July 1932
20	18.1 cm	June 2000