Storms and Heavy Rainfall in the Plains and Southern Appalachians; Hazardous Heat in the South and Southeast

Severe thunderstorms with heavy rainfall will be possible across the southern Appalachians through this evening. Thunderstorms are also expected from the northern/central Plains into portions of the Midwest through Tuesday, and severe storms may produce large hail and damaging wind gusts. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Mostly Cloudy

87°F

31°C

Humidity 63%
Wind Speed S 6 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 17 Aug 4:54 pm EDT
Extended Forecast for

Newtown Square PA

  • Tonight

    Tonight: Partly cloudy, with a low around 69. West wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 86. North wind around 5 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Northwest wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am.  Partly cloudy, with a low around 69. Calm wind.  Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 84. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers.  Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers.  Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 66. Northwest wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Newtown Square PA
 39.99°N 75.44°W (Elev. 299 ft)
4:08 pm EDT Aug 17, 2026
5pm EDT Aug 17, 2026-6pm EDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database