Average Precipitation for Pennsylvania in December





The tables below give monthly averages for rainfall plus snowfall during December 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 December
Days Place Inches Milli­metres
12 Allentown 3.9 98
9 Chambersburg 3.5 88
12 East Stroudsburg 4.4 112
14 George Stevenson Reservoir 3.3 84
8 Gettysburg 3.3 85
10 Harrisburg 3.2 80
11 Lancaster 3.5 88
10 Lebanon 3.6 91
12 Matamoras 4.0 101
11 Norristown 4.7 120
11 Philadelphia 4.0 101
11 Reading 3.5 89
13 State College 3.2 81
10 Sunbury 3.3 85
12 Towanda 2.7 69
12 Wilkes-Barre & Scranton 2.8 71
12 Williamsport 3.3 83
11 York 3.5 89

Western Pennsylvania

December averages for total rainfall plus snowfall
Days Place Inches Milli­metres
10 Altoona 2.6 65
16 Bradford 4.1 104
16 Butler 3.4 86
14 DuBois 3.0 75
19 Erie 4.2 106
15 Indiana 3.6 92
16 Jamestown 3.2 82
16 Meadville 2.6 66
14 New Castle 3.1 80
15 Pittsburgh 2.8 72
15 Uniontown 3.3 85
18 Warren 3.8 97
16 Youghiogheny River Lake 3.5 89
Reference

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

Pennsylvania Precipitation
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