Most Daily Precipitation in London History

This is a list of the largest daily precipitation totals ever recorded in London, Ontario history from 1883–2024.
What's the Most It Has Ever Rained in London?
According to NOAA records, the most rain that London, Ontario has ever received in a single day is 13.0 cm which occurred on Thursday May 17, 1894.
Also see most rain in: 2 days | 1 week | 1 month
London Most Rain in One Day
Rank Precipitation Date
1 13.0 cm May 17, 1894
2 12.3 cm July 13, 1932
3 9.8 cm June 3, 1892
4 8.9 cm September 29, 1986
5 8.9 cm September 9, 1996
6 8.7 cm October 14, 1893
7 8.3 cm June 11, 2000
8 8.3 cm June 25, 1968
9 8.2 cm June 17, 1946
10 8.0 cm July 2, 2023
11 8.0 cm July 10, 1921
12 7.1 cm August 9, 1892
13 6.9 cm September 20, 2013
14 6.9 cm September 2, 1984
15 6.8 cm September 10, 2014
16 6.7 cm September 22, 2021
17 6.6 cm April 20, 2000
18 6.5 cm July 23, 1888
19 6.4 cm June 17, 1984
20 6.3 cm July 5, 1942
20 6.3 cm August 29, 1940
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