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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Rain Fog/Mist Thunderstorm in Vicinity

70°F

21°C

Humidity 100%
Wind Speed E 8 mph
Barometer 29.99 in
Dewpoint 70°F (21°C)
Visibility 1.25 mi
Last update 27 Aug 4:55 pm EDT
Extended Forecast for

West Chester PA

Flood Watch until August 28, 04:00am
Severe T-storm Watch August 27, 05:04pm until August 27, 08:00pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
  •  
    Flood Watch until August 28, 04:00am
    Severe T-storm Watch August 27, 05:04pm until August 27, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 84 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am.  Low around 67. Southeast 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.

    Low: 67 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, mainly between 4pm and 5pm.  Partly sunny, with a high near 83. Calm wind becoming north around 5 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 83. North wind around 5 mph.

    High: 83 °F

    Sunny

  • Saturday Night

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

    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 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Low around 67. Southeast 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 between 4pm and 5pm. Partly sunny, with a high near 83. Calm wind becoming north around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 63. Calm wind.
Saturday
Sunny, with a high near 83. North wind around 5 mph.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 69.
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 71. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 87. 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.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
West Chester PA
 39.96°N 75.62°W (Elev. 397 ft)
4:08 pm EDT Aug 27, 2026
5pm EDT Aug 27, 2026-6pm EDT Sep 3, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database