Average Rainfall for Pennsylvania in September





The tables below give monthly averages for rainfall during September at cities, towns and parks in Pennsylvania.

Each place has a total for the amount of precipitation it usually receives this month along with information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

You can jump to a separate table for Eastern and Western Pennsylvania.

Eastern Pennsylvania

Average monthly precipitation in September
Days Place Inches Milli­metres
9 Allentown 4.6 117
9 Chambersburg 3.6 91
11 George B. Stevenson Reservoir 4.0 102
9 Harrisburg 3.6 92
9 Lancaster 4.6 116
9 Matamoras 4.6 116
8 Norristown 4.9 124
9 Philadelphia 3.8 96
11 State College 3.6 91
10 Towanda 3.5 88
10 Wilkes-Barre & Scranton 4.1 103
10 Williamsport 4.2 106
10 York 4.3 109

Western Pennsylvania

September averages for total rainfall
Days Place Inches Milli­metres
11 Altoona 3.5 88
12 Bradford 4.3 109
11 Butler 3.7 94
11 Erie 4.6 117
11 Indiana 4.0 100
11 Jamestown 4.2 107
11 New Castle 3.7 93
10 Pittsburgh 3.1 79
11 Uniontown 3.4 85
12 Warren 4.0 102
12 Youghiogheny River Lake 3.8 97
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Pennsylvania Precipitation
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