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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

28°F

-2°C

Humidity 37%
Wind Speed Vrbl 5 mph
Barometer 30.09 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Dec 2:15 pm EST
Extended Forecast for

West Chester PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 32. South wind around 5 mph.

    High: 32 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. South wind 5 to 10 mph.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly between 1pm and 3pm. High near 41. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 41 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 32. South wind around 5 mph.
Tonight
Mostly cloudy, with a low around 26. South wind 5 to 10 mph.
Wednesday
Rain, mainly between 1pm and 3pm. High near 41. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph.
Thursday
Mostly sunny, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 36.
Friday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 39.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Sunday
A chance of snow. Partly sunny, with a high near 33. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 15.
Monday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Chester PA
 39.96°N 75.59°W (Elev. 400 ft)
Last Update:
1:21 pm EST Dec 9, 2025
Forecast Valid:
2pm EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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