Average Temperatures for Pennsylvania in September





Average temperatures for September at cities, communities and other locations 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 1991 to 2020 by the US National Centers for Environmental Information.

Eastern Pennsylvania

Average September temperatures
High °F Low °F Place High °C Low °C
77 55 Allentown 25 13
76 56 Chambersburg 24 13
75 52 East Stroudsburg 24 11
73 50 George Stevenson Reservoir 23 10
78 54 Gettysburg 25 12
79 58 Harrisburg 26 15
78 56 Lancaster 26 13
76 55 Lebanon 24 13
74 51 Matamoras 23 10
80 58 Norristown 27 14
79 61 Philadelphia 26 16
77 57 Reading 25 14
72 54 State College 22 12
75 51 Sunbury 24 11
75 51 Towanda 24 10
75 54 Wilkes-Barre & Scranton 24 12
75 54 Williamsport 24 12
80 55 York 27 13

Western Pennsylvania

Average daily temperatures in September
High °F Low °F Place High °C Low °C
74 53 Altoona 23 12
71 47 Bradford 22 8
74 50 Butler 24 10
71 51 DuBois 22 11
74 57 Erie 23 14
75 51 Indiana 24 11
74 51 Jamestown 23 10
72 53 Meadville 22 12
79 52 New Castle 26 11
75 55 Pittsburgh 24 13
78 53 Uniontown 25 12
74 52 Warren 23 11
76 52 Youghiogheny River Lake 25 11
Reference

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

Pennsylvania Temperatures
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