Pennsylvania Climate Data
NOAA 30-year climate normals for all 67 counties.
State Avg Temp
49.9°F
Hottest County
Philadelphia County
57.0°F avg
Coldest County
Wayne County
44.1°F avg
Wettest County
Northampton County
53.4" precip
All Pennsylvania Counties
Adams County
52.7°F avg
Allegheny County
51.9°F avg
Armstrong County
50.0°F avg
Beaver County
50.5°F avg
Bedford County
50.6°F avg
Berks County
52.5°F avg
Blair County
50.4°F avg
Bradford County
48.0°F avg
Bucks County
52.3°F avg
Butler County
48.3°F avg
Cambria County
47.8°F avg
Cameron County
47.8°F avg
Carbon County
50.0°F avg
Centre County
47.8°F avg
Chester County
52.9°F avg
Clarion County
46.9°F avg
Clearfield County
47.9°F avg
Clinton County
49.6°F avg
Columbia County
47.6°F avg
Crawford County
47.9°F avg
Cumberland County
52.3°F avg
Dauphin County
52.3°F avg
Delaware County
56.7°F avg
Elk County
46.4°F avg
Erie County
49.0°F avg
Fayette County
50.6°F avg
Forest County
49.9°F avg
Franklin County
51.5°F avg
Fulton County
Data pending
Greene County
51.5°F avg
Huntingdon County
52.0°F avg
Indiana County
49.5°F avg
Jefferson County
47.7°F avg
Juniata County
Data pending
Lackawanna County
Data pending
Lancaster County
53.2°F avg
Lawrence County
51.1°F avg
Lebanon County
52.3°F avg
Lehigh County
53.1°F avg
Luzerne County
49.0°F avg
Lycoming County
51.5°F avg
McKean County
45.1°F avg
Mercer County
48.5°F avg
Mifflin County
51.9°F avg
Monroe County
48.1°F avg
Montgomery County
53.3°F avg
Montour County
Data pending
Northampton County
50.9°F avg
Northumberland County
50.4°F avg
Perry County
Data pending
Philadelphia County
57.0°F avg
Pike County
47.5°F avg
Potter County
44.7°F avg
Schuylkill County
48.0°F avg
Snyder County
50.9°F avg
Somerset County
47.7°F avg
Sullivan County
45.5°F avg
Susquehanna County
45.2°F avg
Tioga County
46.5°F avg
Union County
51.1°F avg
Venango County
49.0°F avg
Warren County
46.7°F avg
Washington County
51.8°F avg
Wayne County
44.1°F avg
Westmoreland County
50.5°F avg
Wyoming County
Data pending
York County
53.9°F avg
Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.