National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Partly Cloudy

73°F

23°C

Humidity 69%
Wind Speed NW 8 mph
Barometer 30.02 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 18 Sep 11:35 am EDT
Extended Forecast for

West Chester PA

  • Today

    Today: Sunny, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. West wind around 5 mph.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 85. Northwest wind around 5 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. North wind around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76. East wind around 5 mph.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 73.

    High: 73 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. West wind around 5 mph.
Tonight
Clear, with a low around 59. West wind around 5 mph.
Friday
Sunny, with a high near 85. Northwest wind around 5 mph.
Friday Night
Mostly clear, with a low around 57. North wind around 5 mph.
Saturday
Mostly sunny, with a high near 76. East wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Mostly cloudy, with a high near 73.
Sunday Night
Mostly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Chester PA
 39.96°N 75.62°W (Elev. 397 ft)
Last Update:
4:09 am EDT Sep 18, 2025
Forecast Valid:
11am EDT Sep 18, 2025-6pm EDT Sep 24, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation