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.

Unknown Precip

33°F

1°C

Humidity 59%
Wind Speed Vrbl 6 mph
Barometer 30.03 in
Dewpoint 20°F (-7°C)
Visibility 5.00 mi
Wind Chill27°F (-3°C)
Last update 17 Jan 7:35 am EST
Extended Forecast for

3 Miles NNE Unionville PA

  • Today

    Today: Snow, possibly mixing with rain after noon, then gradually ending. High near 41. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 41 °F

    Snow then
    Rain/Snow
    Likely

  • Tonight

    Tonight: 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 Snow

  • Sunday

    Sunday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 35. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. West wind around 5 mph.

    Low: 17 °F

    Partly Cloudy

  • M.L.King Day

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

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

Detailed Forecast

Today
Snow, possibly mixing with rain after noon, then gradually ending. High near 41. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
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 chance of snow, mainly before 1pm. Mostly cloudy, with a high near 35. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 17. West wind around 5 mph.
M.L.King Day
Sunny, with a high near 34. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Mostly clear, with a low around 11.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 32.
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Forecast Area
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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 17, 2026
Forecast Valid:
7am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation