Most Monthly Precipitation in Oklahoma City History

This is a list of the largest monthly precipitation totals ever recorded in Oklahoma City, Oklahoma history from 1894–2024.

What Was the Wettest Month in Oklahoma City History?

According to NOAA records, the most precipitation that Oklahoma City, Oklahoma has ever received in a single month is 19.5 inches which occurred in May 2015.

Month to date though April 21, 2024: 2.1 inches

Oklahoma City Most Rain in One Month

Rank	Precipitation	Month
1	19.5 inches	May 2015
2	14.9 inches	October 1908
3	14.8 inches	October 1941
4	14.7 inches	June 1989
5	14.5 inches	May 2013
6	13.5 inches	June 1932
7	13.2 inches	October 1983
8	13.0 inches	May 1902
9	12.9 inches	May 1929
10	12.5 inches	May 2019
11	12.1 inches	May 1982
12	12.0 inches	October 1923
13	12.0 inches	June 1941
14	11.9 inches	July 1996
15	11.9 inches	May 1987
16	11.9 inches	September 1991
17	11.7 inches	May 1898
18	11.6 inches	September 1945
19	11.3 inches	June 1921
20	11.0 inches	September 1923