Most Monthly Precipitation in Port Arthur History

This is a list of the largest monthly precipitation totals ever recorded in Port Arthur, Texas history from 1947–2024.

What Was the Wettest Month in Port Arthur History?

According to NOAA records, the most precipitation that Port Arthur, Texas has ever received in a single month is 54.7 inches which occurred in August 2017.

Port Arthur Most Rain in One Month

Rank	Precipitation	Month
1	54.7 inches	August 2017
2	23.2 inches	September 2019
3	22.0 inches	September 1980
4	18.9 inches	June 1989
5	18.7 inches	July 1959
6	18.5 inches	September 2018
7	18.2 inches	September 1963
8	18.0 inches	December 1982
9	17.3 inches	August 1966
10	15.7 inches	July 1979
11	15.6 inches	May 2021
12	15.3 inches	April 1973
13	15.1 inches	October 1970
14	14.9 inches	October 1984
15	14.9 inches	October 2009
16	14.9 inches	January 1991
17	14.8 inches	July 2006
18	14.7 inches	October 2006
19	14.6 inches	October 1949
20	14.6 inches	September 1958