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.

A Few Clouds

20°F

-7°C

Humidity 65%
Wind Speed NW 13 mph
Barometer 29.89 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 18 Jan 11:15 pm EST
Extended Forecast for

West Chester PA

  • Tonight

    Tonight: Mostly clear, with a low around 17. West wind 5 to 10 mph.

    Low: 17 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12. West wind 10 to 15 mph.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22. Wind chill values as low as zero. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 7. West wind around 5 mph becoming calm in the evening.

    Low: 7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 17. West wind 5 to 10 mph.
M.L.King Day
Mostly sunny, with a high near 34. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 12. West wind 10 to 15 mph.
Tuesday
Sunny, with a high near 22. Wind chill values as low as zero. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 7. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 30.
Friday Night
Partly cloudy, with a low around 19.
Saturday
A chance of snow. Partly sunny, with a high near 28. Chance of precipitation is 30%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Sunday
A chance of snow. Partly sunny, with a high near 21. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Chester PA
 39.94°N 75.59°W (Elev. 390 ft)
Last Update:
8:03 pm EST Jan 18, 2026
Forecast Valid:
11pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation