Pennsylvania weather by county

Pennsylvania in September 2026

• 60 of 67 counties ran at least 1° warmer than usual in September 2026, and 0 ran at least 1° cooler.
• Warmest against its own records: Clarion County (6th-warmest September of 132). Even the least warm, Bradford County, had its 46th-warmest.
• Wettest September against its records: Centre County, 7.4 inches (8th-wettest).
• 6 of 67 counties were in moderate drought or worse on NOAA's Palmer reading for September.
• Since 1970 the state's counties have warmed about 0.6° per decade on average, Elk County the most at 0.7°.

This week's forecast against the usual, and every month since 1895, for all 67 counties in Pennsylvania. 11 had a top-10 warm September in 2026.

• Adams County 18th warmest Sep
• Allegheny County 11th warmest Sep
• Armstrong County 7th warmest Sep
• Beaver County 11th warmest Sep
• Bedford County 14th warmest Sep
• Berks County 19th warmest Sep
• Blair County 15th warmest Sep
• Bradford County 46th warmest Sep
• Bucks County 18th warmest Sep
• Butler County 7th warmest Sep
• Cambria County 14th warmest Sep
• Cameron County 16th warmest Sep
• Carbon County 20th warmest Sep
• Centre County 18th warmest Sep
• Chester County 17th warmest Sep
• Clarion County 6th warmest Sep
• Clearfield County 10th warmest Sep
• Clinton County 25th warmest Sep
• Columbia County 25th warmest Sep
• Crawford County 7th warmest Sep
• Cumberland County 20th warmest Sep
• Dauphin County 20th warmest Sep
• Delaware County 21st warmest Sep
• Elk County 8th warmest Sep
• Erie County 17th warmest Sep
• Fayette County 23rd warmest Sep
• Forest County 10th warmest Sep
• Franklin County 17th warmest Sep
• Fulton County 15th warmest Sep
• Greene County 19th warmest Sep
• Huntingdon County 17th warmest Sep
• Indiana County 11th warmest Sep
• Jefferson County 7th warmest Sep
• Juniata County 22nd warmest Sep
• Lackawanna County 30th warmest Sep
• Lancaster County 14th warmest Sep
• Lawrence County 7th warmest Sep
• Lebanon County 22nd warmest Sep
• Lehigh County 20th warmest Sep
• Luzerne County 23rd warmest Sep
• Lycoming County 24th warmest Sep
• McKean County 11th warmest Sep
• Mercer County 6th warmest Sep
• Mifflin County 22nd warmest Sep
• Monroe County 25th warmest Sep
• Montgomery County 21st warmest Sep
• Montour County 24th warmest Sep
• Northampton County 19th warmest Sep
• Northumberland County 19th warmest Sep
• Perry County 20th warmest Sep
• Philadelphia County 22nd warmest Sep
• Pike County 31st warmest Sep
• Potter County 22nd warmest Sep
• Schuylkill County 22nd warmest Sep
• Snyder County 23rd warmest Sep
• Somerset County 16th warmest Sep
• Sullivan County 43rd warmest Sep
• Susquehanna County 42nd warmest Sep
• Tioga County 25th warmest Sep
• Union County 23rd warmest Sep
• Venango County 6th warmest Sep
• Warren County 15th warmest Sep
• Washington County 18th warmest Sep
• Wayne County 33rd warmest Sep
• Westmoreland County 17th warmest Sep
• Wyoming County 41st warmest Sep
• York County 13th warmest Sep

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