Average Precipitation for Pennsylvania in May





The tables below give monthly averages for rainfall plus snowfall during May at cities and other locations 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 precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

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

Eastern Pennsylvania

Average monthly precipitation in May
Days Place Inches Milli­metres
12 Allentown 3.7 93
12 Chambersburg 4.1 105
14 East Stroudsburg 4.4 112
14 George Stevenson Reservoir 3.8 97
11 Gettysburg 4.1 104
14 Harrisburg 3.5 88
13 Lancaster 3.7 93
13 Lebanon 4.0 101
12 Matamoras 3.3 85
14 Norristown 4.3 108
11 Philadelphia 3.3 85
13 Reading 3.5 89
15 State College 3.6 92
14 Sunbury 3.8 96
13 Towanda 3.4 85
13 Wilkes-Barre & Scranton 3.3 83
14 Williamsport 3.9 98
13 York 4.2 107

Western Pennsylvania

May averages for total rainfall plus snowfall
Days Place Inches Milli­metres
14 Altoona 3.7 94
13 Bradford 4.5 114
15 Butler 3.8 97
15 DuBois 3.7 94
14 Erie 3.5 89
15 Indiana 4.3 110
14 Jamestown 3.9 100
15 Meadville 3.7 95
14 New Castle 3.9 99
14 Pittsburgh 3.8 97
15 Uniontown 4.4 111
14 Warren 4.3 109
17 Youghiogheny River Lake 4.9 125
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Pennsylvania Precipitation
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