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.

Partly Cloudy

28°F

-2°C

Humidity 56%
Wind Speed W 5 mph
Barometer 30.12 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 14 Feb 7:35 am EST
Extended Forecast for

Downingtown PA

  • Today

    Today: Sunny, with a high near 45. Southwest wind 5 to 10 mph becoming west in the afternoon.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 1pm, mixing with snow after 4pm. Mostly cloudy, with a high near 42. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 29. East wind around 5 mph becoming calm. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 44. North wind around 5 mph becoming calm in the afternoon.

    High: 44 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 49. Chance of precipitation is 50%.

    High: 49 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 45. Southwest wind 5 to 10 mph becoming west in the afternoon.
Tonight
Mostly cloudy, with a low around 27. Calm wind.
Sunday
A chance of rain after 1pm, mixing with snow after 4pm. Mostly cloudy, with a high near 42. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 29. East wind around 5 mph becoming calm. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Partly sunny, with a high near 44. North wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A chance of rain. Cloudy, with a high near 49. Chance of precipitation is 50%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Downingtown PA
 40°N 75.7°W (Elev. 299 ft)
Last Update:
4:15 am EST Feb 14, 2026
Forecast Valid:
7am EST Feb 14, 2026-6pm EST Feb 20, 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