Average Temperatures for Pennsylvania in September





Average temperatures for September at cities, towns, parks and lakes throughout Pennsylvania are listed below in degrees Fahrenheit and Celsius.

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

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.

Eastern Pennsylvania

Average September temperatures
High °F Low °F Place High °C Low °C
75 53 Allentown 24 12
75 50 Beltzville Lake Dam 24 10
75 55 Chambersburg 24 13
74 51 George B. Stevenson Reservoir 23 10
76 56 Harrisburg 24 13
76 55 Lancaster 24 13
74 50 Matamoras 23 10
80 56 Norristown 27 13
78 60 Philadelphia 26 16
72 53 State College 22 12
73 50 Towanda 23 10
72 52 Wilkes-Barre & Scranton 22 11
74 53 Williamsport 23 12
78 55 York 26 13

Western Pennsylvania

Average daily temperatures in September
High °F Low °F Place High °C Low °C
72 51 Altoona 22 11
70 46 Bradford 21 8
74 50 Butler 23 10
72 56 Erie 22 13
74 50 Indiana 24 10
72 50 Jamestown 22 10
76 51 New Castle 25 11
74 54 Pittsburgh 24 12
76 51 Uniontown 25 11
73 51 Warren 23 10
75 50 Youghiogheny River Lake 24 10
Reference

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

Pennsylvania Temperatures
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