Weather in Berwyn, PA · National Weather Service + NOAA
Berwyn has milder winters than most of Pennsylvania
Berwyn has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 86°, a January night drops to 23°, and about 8 inches of snow falls in a normal winter.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Berwyn itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Conshohocken, PA (7 mi, snow) and Phoenixville 1 E, PA (6 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.