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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

79°F

26°C

Humidity 33%
Wind Speed S 9 G 18 mph
Barometer 29.97 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 10 Mar 4:15 pm EDT
Extended Forecast for

Exton PA

  • Tonight

    Tonight: Mostly clear, with a low around 53. South wind around 5 mph.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 77. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 48. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Thursday

    Thursday: Rain showers likely before 5pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 54. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 54 °F

    Breezy.
    Showers
    Likely then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Northwest wind 5 to 10 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 48. Breezy.

    High: 48 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 53. South wind around 5 mph.
Wednesday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 77. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 48. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain showers likely before 5pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 54. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 29. Northwest wind 5 to 10 mph.
Friday
Partly sunny, with a high near 48. Breezy.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Cloudy, with a high near 59.
Sunday Night
Rain. Low around 48. Chance of precipitation is 80%.
Monday
Rain. High near 59. Chance of precipitation is 80%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 35.
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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:
4:09 pm EDT Mar 10, 2026
Forecast Valid:
4pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation