Most Monthly Precipitation in Altoona History

This is a list of the largest monthly precipitation totals ever recorded in Altoona, Pennsylvania history from 1893–2024.

What Was the Wettest Month in Altoona History?

According to NOAA records, the most precipitation that Altoona, Pennsylvania has ever received in a single month is 14.2 inches which occurred in September 2004.

Altoona Most Rain in One Month

Rank	Precipitation	Month
1	14.2 inches	September 2004
2	13.0 inches	June 1972
3	10.9 inches	November 1997
4	10.4 inches	June 1939
5	10.1 inches	September 2011
6	9.9 inches	September 2018
7	9.8 inches	June 1916
8	9.6 inches	May 1933
9	9.5 inches	June 1946
10	9.5 inches	March 1936
11	9.4 inches	October 1929
12	9.3 inches	May 1894
13	8.8 inches	June 1928
14	8.7 inches	July 1989
15	8.7 inches	July 1912
16	8.5 inches	September 1996
17	8.5 inches	April 1937
18	8.5 inches	July 1979
19	8.4 inches	October 1976
20	8.4 inches	November 1985