Areas of Extreme Heat and Fire Weather in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Extreme heat will continue in the interior Northwest into midweek before finally waning. Hot temperatures, dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather. Heavy rain and thunderstorms are expected across portions of the Great Basin, Rockies, and central/southern Plains. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. Read More >

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Partly Cloudy

77°F

25°C

Humidity 34%
Wind Speed W 9 mph
Barometer 30.03 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 26 Aug 4:55 pm EDT
Extended Forecast for

Downingtown PA

  • Tonight

    Tonight: Partly cloudy, with a low around 53. West wind around 5 mph becoming calm  in the evening.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 75. Northwest wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 52. West wind around 5 mph becoming calm.

    Low: 52 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. South wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 76. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 75. Northwest wind 5 to 10 mph.
Wednesday Night
Increasing clouds, with a low around 52. West wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. South wind around 5 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 54.
Labor Day
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Downingtown PA
 40°N 75.7°W (Elev. 299 ft)
4:10 pm EDT Aug 26, 2025
5pm EDT Aug 26, 2025-6pm EDT Sep 2, 2025
 
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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