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.

Fog/Mist

62°F

17°C

Humidity 100%
Wind Speed Vrbl 6 mph
Barometer 29.85 in
Dewpoint 62°F (17°C)
Visibility 1.00 mi
Last update 16 Oct 10:35 am EDT
Extended Forecast for

Exton PA

  • Today

    Today: A chance of showers before noon, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 3am. Some of the storms could be severe. Low around 44. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a north wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 52 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Patchy frost after 4am. Otherwise, mostly clear, with a low around 34. North wind around 10 mph.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 57. North wind around 5 mph.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers before noon, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 3am. Some of the storms could be severe. Low around 44. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a north wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 34. North wind around 10 mph.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 57. North wind around 5 mph.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Exton PA
 40.03°N 75.61°W (Elev. 394 ft)
Last Update:
11:20 am EDT Oct 16, 2026
Forecast Valid:
11am EDT Oct 16, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation