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.

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 62°F (17°C)
Visibility 9.00 mi
Last update 14 Oct 5:35 am EDT
Extended Forecast for

Atglen PA

  • Today

    Today: A chance of showers and thunderstorms before 2pm, then a slight chance of showers. Increasing clouds, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming north after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 3pm and 5pm. Mostly sunny, with a high near 65. North wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 65 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely before 8am, then showers after 2pm. High near 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 76 °F

    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers, mainly before 8pm. Low around 42. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Breezy.
    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 51. Breezy.

    High: 51 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Patchy frost. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Patchy Frost
    then Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 2pm, then a slight chance of showers. Increasing clouds, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming north after midnight.
Thursday
A slight chance of showers between 3pm and 5pm. Mostly sunny, with a high near 65. North wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely before 8am, then showers after 2pm. High near 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly before 8pm. Low around 42. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 51. Breezy.
Saturday Night
Patchy frost. Otherwise, mostly clear, with a low around 34.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Atglen PA
 39.94°N 75.97°W (Elev. 577 ft)
Last Update:
4:09 am EDT Oct 14, 2026
Forecast Valid:
5am EDT Oct 14, 2026-6pm EDT Oct 20, 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