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

46°F

8°C

Humidity 54%
Wind Speed Vrbl 6 mph
Barometer 30.16 in
Dewpoint 30°F (-1°C)
Visibility 9.00 mi
Wind Chill43°F (6°C)
Last update 19 Mar 3:55 pm EDT
Extended Forecast for

Atglen PA

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Southwest wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 58. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.

    High: 58 °F

    Mostly Sunny
    then
    Increasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 44. Southwest wind 5 to 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 60. Northwest wind 5 to 10 mph.

    High: 60 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43. Northwest wind around 5 mph becoming southeast after midnight.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. Southwest wind around 5 mph becoming calm in the evening.
Friday
Increasing clouds, with a high near 58. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 44. Southwest wind 5 to 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 60. Northwest wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 43. Northwest wind around 5 mph becoming southeast after midnight.
Sunday
Partly sunny, with a high near 66.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 54. Breezy.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
Mostly cloudy, with a high near 55.
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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:
4:10 pm EDT Mar 19, 2026
Forecast Valid:
4pm EDT Mar 19, 2026-6pm EDT Mar 26, 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