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

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

47°F

8°C

Humidity 32%
Wind Speed NW 16 G 21 mph
Barometer 30.18 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Apr 4:55 pm EDT
Extended Forecast for

Exton PA

Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Tonight

    Tonight: Widespread frost between 4am and 5am. Otherwise, mostly clear, with a low around 27. North wind 5 to 15 mph.

    Low: 27 °F

    Mostly Clear
    then Frost

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 56. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 56 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 43. South wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. North wind around 5 mph becoming calm.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Tonight
Widespread frost between 4am and 5am. Otherwise, mostly clear, with a low around 27. North wind 5 to 15 mph.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 56. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 43. South wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 46. North wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 71.
Friday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Exton PA
 40.03°N 75.61°W (Elev. 394 ft)
Last Update:
4:10 pm EDT Apr 20, 2026
Forecast Valid:
5pm EDT Apr 20, 2026-6pm EDT Apr 27, 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