Our southeast PA forecast region includes Philadelphia, Doylestown, West Chester, Lancaster, York, Gettysburg & surrounding areas. Forecasts are updated daily M-F and Saturday that covers both weekend days – not Sunday.
Southeast PA Forecast

Hot and steamy to begin the week, then a comfortable turn expected mid-late week…
A partly cloudy hot and humid day is expected on Monday, very similar to Sunday’s conditions. A stray afternoon or evening thunderstorm will be possible in western counties of Central PA, but likely fizzles farther east. Highs reach the middle 90s this afternoon, and remains in the upper 70s overnight.
The next chance for scattered thunderstorms arrives late Tuesday, most notably in interior areas well ahead of a cold front…which works through the region on Wednesday with more numerous scattered showers and thunderstorms likely, the threat of which extends into part of the overnight. Cooler temperatures will move in behind the front with lower humidity beginning Thursday and continues through the end of next week. An early shower Thursday morning, then becoming partly cloudy…which will be followed by a mostly sunny and gorgeous stretch between Friday and Sunday.
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Forecaster: Martrich 8 August 0300z
Daily climatology for Philadelphia, PA
Average high | Average low | Record high temp (year) | Record low temp (year) |
87°F | 69°F | 100°F (2001) | 55°F (1989) |