Average Temperatures for Pennsylvania in May





Average temperatures for May 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 May temperatures
High °F Low °F Place High °C Low °C
74 51 Allentown 23 10
73 52 Chambersburg 23 11
72 47 East Stroudsburg 22 9
70 43 George Stevenson Reservoir 21 6
73 49 Gettysburg 23 10
75 53 Harrisburg 24 12
75 50 Lancaster 24 10
72 51 Lebanon 22 10
70 45 Matamoras 21 7
75 52 Norristown 24 11
74 54 Philadelphia 24 12
74 52 Reading 23 11
69 50 State College 21 10
72 47 Sunbury 22 8
71 46 Towanda 22 8
72 50 Wilkes-Barre & Scranton 22 10
72 49 Williamsport 22 10
77 50 York 25 10

Western Pennsylvania

Average daily temperatures in May
High °F Low °F Place High °C Low °C
71 50 Altoona 22 10
68 42 Bradford 20 6
70 45 Butler 21 7
68 47 DuBois 20 8
68 49 Erie 20 10
72 46 Indiana 22 8
70 46 Jamestown 21 8
69 48 Meadville 20 9
73 47 New Castle 23 8
72 51 Pittsburgh 22 10
73 48 Uniontown 23 9
70 45 Warren 21 7
72 47 Youghiogheny River Lake 22 8
Reference

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

Pennsylvania Temperatures
Back to Top