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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Rain

66°F

19°C

Humidity 99%
Wind Speed N 8 mph
Barometer 30.00 in
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 28 Aug 12:15 am EDT
Extended Forecast for

Kennett Square PA

Flood Watch August 28, 12:18am until August 28, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 28, 12:18am until August 28, 04:00am

    NOW until 4:00am Fri

    Flood Watch

  • Overnight

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 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
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, 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 83. Northeast wind around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth 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 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 64. Calm wind becoming north around 5 mph.
Saturday
Mostly sunny, with a high near 83. Northeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 64. Calm wind.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 87.
Monday Night
Mostly cloudy, with a low around 70.
Tuesday
Partly sunny, with a high near 88.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kennett Square PA
 39.84°N 75.7°W (Elev. 299 ft)
Last Update:
4:08 pm EDT Aug 27, 2026
Forecast Valid:
12am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
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