Most Daily Precipitation in Casper History

This is a list of the largest daily precipitation totals ever recorded in Casper, Wyoming history from 1900–2024.
Casper Most Rain in One Day
Rank Precipitation Date
1 3.5 inches April 20, 1933
2 2.7 inches September 28, 1923
3 2.6 inches July 25, 1901
4 2.2 inches May 17, 2000
5 2.2 inches August 2, 2007
6 2.2 inches May 5, 2007
7 2.2 inches June 19, 1986
8 2.1 inches June 14, 1982
9 2.1 inches June 16, 2003
10 2.1 inches May 22, 1952
11 2.1 inches October 16, 1998
12 2.0 inches September 20, 1989
13 2.0 inches May 17, 1978
14 2.0 inches July 5, 1926
15 1.9 inches October 6, 1962
16 1.8 inches April 20, 1974
17 1.8 inches July 22, 1983
18 1.8 inches September 20, 1950
19 1.8 inches April 6, 1922
20 1.7 inches May 5, 1993