Most Daily Precipitation in Saint John History

This is a list of the largest daily precipitation totals ever recorded in Saint John, New Brunswick history from 1871–2024.

What's the Most It Has Ever Rained in Saint John?

According to NOAA records, the most rain that Saint John, New Brunswick has ever received in a single day is 15.4 cm which occurred on Thursday November 13, 1975.

Also see most rain in: 2 days | 1 week | 1 month

Saint John Most Rain in One Day

Rank	Precipitation	Date
1	15.4 cm	November 13, 1975
2	12.6 cm	April 1, 1962
3	12.5 cm	August 2, 1970
4	12.4 cm	June 24, 1901
5	12.3 cm	August 26, 1924
6	11.8 cm	September 16, 1940
7	11.1 cm	September 30, 2015
8	11.0 cm	March 13, 1920
9	10.8 cm	June 1, 1985
10	10.8 cm	August 29, 2009
11	10.7 cm	September 11, 2015
12	10.6 cm	December 4, 1967
13	10.5 cm	October 25, 1926
14	10.4 cm	September 7, 2008
15	10.3 cm	October 11, 1900
16	10.0 cm	December 2, 1981
17	10.0 cm	April 29, 1958
18	9.6 cm	December 1, 2020
19	9.5 cm	February 5, 1947
20	9.2 cm	August 21, 1904
20	9.2 cm	August 18, 1895