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.

Fair

18°F

-8°C

Humidity 58%
Wind Speed W 12 G 18 mph
Barometer 29.83 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 16 Jan 6:15 am EST
Extended Forecast for

3 Miles NNE Unionville PA

  • Today

    Today: Sunny, with a high near 35. West wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 35 °F

    Sunny

  • Tonight

    Tonight: A chance of snow, mainly after 2am. Increasing clouds, with a low around 27. South wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Partly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely before 1pm, then a slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 41. South wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A slight chance of freezing rain between 1am and 4am, then a slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Sunday

    Sunday: A slight chance of snow. Mostly cloudy, with a high near 34. West wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 34 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 35. West wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
A chance of snow, mainly after 2am. Increasing clouds, with a low around 27. South wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Saturday
Snow likely before 1pm, then a slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 41. South wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A slight chance of freezing rain between 1am and 4am, then a slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
A slight chance of snow. Mostly cloudy, with a high near 34. West wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 18.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 9.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Unionville PA
 39.93°N 75.71°W (Elev. 295 ft)
Last Update:
4:11 am EST Jan 16, 2026
Forecast Valid:
6am EST Jan 16, 2026-6pm EST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation