National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Major Winter Storm Impacting the Region through Monday

Significant heavy snowfall is forecast from a winter storm through Monday, with potential for major to extreme impacts. View the latest briefing here. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Unknown Precip Fog/Mist

29°F

-2°C

Humidity 100%
Wind Speed NE 15 G 21 mph
Barometer 29.77 in
Dewpoint 29°F (-2°C)
Visibility 1.00 mi
Wind Chill18°F (-8°C)
Last update 22 Feb 9:55 pm EST
Extended Forecast for

Downingtown PA

Winter Storm Warning February 22, 10:14pm until February 23, 06:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning February 22, 10:14pm until February 23, 06:00pm

    NOW until 6:00pm Mon

    Winter Storm Warning

  • Tonight

    Low: 29 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow, mainly before noon. The snow could be heavy at times. Areas of blowing snow before 9am. High near 35. Breezy, with a northwest wind around 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 35 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 18. Northwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely after 1am. Mostly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 19 °F

    Mostly Cloudy
    then Snow
    Likely

  • Wednesday

    Wednesday: A chance of rain and snow before 1pm. Partly sunny, with a high near 43. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow before 1pm, then rain likely. Mostly cloudy, with a high near 45. Chance of precipitation is 70%.

    High: 45 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Areas of blowing snow. Low around 29. Blustery, with a north wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 10 to 14 inches possible.
Monday
Snow, mainly before noon. The snow could be heavy at times. Areas of blowing snow before 9am. High near 35. Breezy, with a northwest wind around 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Monday Night
Mostly cloudy, with a low around 18. Northwest wind around 10 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 30. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Snow likely after 1am. Mostly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
A chance of rain and snow before 1pm. Partly sunny, with a high near 43. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
A chance of rain and snow before 1pm, then rain likely. Mostly cloudy, with a high near 45. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 46.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Downingtown PA
 40.02°N 75.7°W (Elev. 338 ft)
Last Update:
4:17 pm EST Feb 22, 2026
Forecast Valid:
10pm EST Feb 22, 2026-6pm EST Mar 1, 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