7-Day Forecast 39.99°N 75.44°W (Text-Only)
NWS Forecast for: Newtown Square PA
Issued by: National Weather Service Philadelphia, PA
Last Update: 4:12 pm EDT Jun 22, 2025




Overnight: Mostly clear, with a low around 77. Northwest wind around 5 mph.

Monday: Sunny and hot, with a high near 97. Heat index values as high as 107. Northwest wind around 5 mph.

Monday Night: Mostly clear, with a low around 77. West wind around 5 mph becoming calm.

Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 104. Northwest wind 5 to 10 mph.

Tuesday Night: Mostly clear, with a low around 78. West wind around 5 mph.

Wednesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Chance of precipitation is 20%.

Wednesday Night: A chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 50%.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.

Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.

Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.



Newtown Square PA
 39.99°N 75.44°W (Elev. 299 ft)

Visit your local NWS office at: https://www.weather.gov/phi/