Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Heavy Rain

73°F

23°C

Humidity 79%
Wind Speed NE 13 G 16 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 66°F (19°C)
Visibility 0.25 mi
Last update 27 Aug 6:54 pm EDT
Extended Forecast for

Newtown Square PA

Flood Watch until August 28, 04:00am
Severe T-storm Watch August 27, 07:23pm until August 27, 08:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch until August 28, 04:00am
    Severe T-storm Watch August 27, 07:23pm until August 27, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 5pm.  Partly sunny, with a high near 84. Calm wind becoming north around 5 mph.  Chance of precipitation is 30%.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind becoming north around 5 mph.

    Low: 64 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 84. North wind around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Low around 68. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 84. Calm wind becoming north around 5 mph. Chance of precipitation is 30%.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind becoming north around 5 mph.
Saturday
Mostly sunny, with a high near 84. North wind around 5 mph.
Saturday Night
Mostly clear, with a low around 65. Calm wind.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly cloudy, with a low around 71.
Tuesday
Partly sunny, with a high near 89.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Newtown Square PA
 39.97°N 75.44°W (Elev. 308 ft)
4:08 pm EDT Aug 27, 2026
7pm EDT Aug 27, 2026-6pm EDT Sep 3, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database