Average Annual Precipitation for Pennsylvania

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The tables below give yearly averages for rainfall plus snowfall at cities, towns and parks in Pennsylvania.

Each place has a total for the amount of precipitation it usually receives in a year 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 annual precipitation 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 yearly precipitation
Days Place Inches Millimetres
127 Allentown 45.4 1152
117 Chambersburg 41.7 1059
147 George B. Stevenson Reservoir 41.9 1063
127 Harrisburg 40.9 1039
121 Lancaster 42.8 1087
127 Matamoras 46.0 1168
120 Norristown 48.4 1229
118 Philadelphia 41.5 1055
144 State College 39.6 1006
133 Towanda 35.7   908
139 Wilkes-Barre & Scranton 38.3   972
133 Williamsport 41.3 1049
127 York 42.9 1089

Western Pennsylvania

Annual averages for rainfall plus snowfall
Days Place Inches Millimetres
136 Altoona 35.6   905
160 Bradford 48.6 1235
163 Butler 41.8 1062
166 Erie 42.2 1071
162 Indiana 46.5 1181
159 Jamestown 42.5 1079
151 New Castle 39.5 1002
151 Pittsburgh 38.2   970
159 Uniontown 43.1 1095
173 Warren 47.1 1196
164 Youghiogheny River Lake 45.5 1156
Reference

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

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