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.

Mostly Cloudy

36°F

2°C

Humidity 45%
Wind Speed W 15 G 23 mph
Barometer 29.93 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Mar 12:55 pm EDT
Extended Forecast for

Exton PA

  • This Afternoon

    This Afternoon: Scattered flurries after 2pm. Mostly cloudy, with a high near 37. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.

    High: 37 °F

    Scattered
    Flurries and
    Breezy

  • Tonight

    Tonight: Isolated snow showers before 7pm, then scattered flurries between 7pm and 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 23. Northwest wind 10 to 15 mph.

    Low: 23 °F

    Isolated Snow
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. Northwest wind around 5 mph becoming calm.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. South wind around 5 mph becoming calm.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 49. Light south wind increasing to 5 to 10 mph in the morning.

    High: 49 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 2am. Cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Cloudy then
    Chance Rain

  • Friday

    Friday: A chance of rain before 8am. Mostly cloudy, with a high near 54. Chance of precipitation is 30%.

    High: 54 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Scattered flurries after 2pm. Mostly cloudy, with a high near 37. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.
Tonight
Isolated snow showers before 7pm, then scattered flurries between 7pm and 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 23. Northwest wind 10 to 15 mph.
Wednesday
Partly sunny, with a high near 40. Northwest wind around 5 mph becoming calm.
Wednesday Night
Partly cloudy, with a low around 26. South wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 49. Light south wind increasing to 5 to 10 mph in the morning.
Thursday Night
A chance of rain after 2am. Cloudy, with a low around 33. Chance of precipitation is 30%.
Friday
A chance of rain before 8am. Mostly cloudy, with a high near 54. Chance of precipitation is 30%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 56.
Saturday Night
A chance of rain before 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 59.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Exton PA
 40.03°N 75.64°W (Elev. 299 ft)
Last Update:
11:48 am EDT Mar 17, 2026
Forecast Valid:
1pm EDT Mar 17, 2026-6pm EDT Mar 23, 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