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.

Overcast

75°F

24°C

Humidity 59%
Wind Speed Vrbl 6 mph
Barometer 29.72 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 11 Mar 6:15 pm EDT
Extended Forecast for

Atglen PA

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then a chance of showers. Mostly cloudy, with a low around 40. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: Rain, possibly mixed with sleet before noon, then a chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Temperature falling to around 37 by 1pm. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.

    High: 45 °F⇓

    Breezy.
    Rain/Sleet
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming clear, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 47. Breezy, with a south wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 47 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 51.

    High: 51 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Chance Rain
    then Rain

Detailed Forecast

Tonight
Showers and thunderstorms likely before 3am, then a chance of showers. Mostly cloudy, with a low around 40. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain, possibly mixed with sleet before noon, then a chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Temperature falling to around 37 by 1pm. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.
Thursday Night
Mostly cloudy, then gradually becoming clear, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 47. Breezy, with a south wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 45 mph.
Friday Night
Partly cloudy, with a low around 36. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
Cloudy, with a high near 51.
Sunday Night
Rain, mainly after 2am. Low around 47. Chance of precipitation is 80%.
Monday
Rain. High near 60. Breezy. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 37.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Atglen PA
 39.94°N 75.97°W (Elev. 577 ft)
Last Update:
4:10 pm EDT Mar 11, 2026
Forecast Valid:
6pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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