Most Monthly Precipitation in Rio Grande City History

This is a list of the largest monthly precipitation totals ever recorded in Rio Grande City, Texas history from 1892–2024.

What Was the Wettest Month in Rio Grande City History?

According to NOAA records, the most precipitation that Rio Grande City, Texas has ever received in a single month is 26.1 inches which occurred in September 1967.

Rio Grande City Most Rain in One Month

Rank	Precipitation	Month
1	26.1 inches	September 1967
2	16.0 inches	September 1998
3	13.3 inches	June 1993
4	12.7 inches	May 2015
5	12.2 inches	September 2014
6	11.5 inches	September 1973
7	10.7 inches	July 2007
8	10.5 inches	August 1981
9	10.5 inches	September 1975
10	10.3 inches	May 1985
11	10.3 inches	August 2008
12	10.2 inches	May 1904
13	9.9 inches	September 2009
14	9.5 inches	October 1958
15	9.2 inches	August 1967
16	9.2 inches	October 2003
17	8.9 inches	September 1925
18	8.9 inches	September 2003
19	8.7 inches	May 1964
20	8.2 inches	June 1981