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.

Overcast

42°F

6°C

Humidity 48%
Wind Speed W 5 mph
Barometer 29.89 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 26 Feb 12:35 pm EST
Extended Forecast for

3 Miles NNE Unionville PA

  • This Afternoon

    This Afternoon: A chance of rain and snow before 2pm, then a chance of rain between 2pm and 4pm, then a slight chance of rain and snow after 4pm. Mostly cloudy, with a high near 43. West wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 43 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: Mostly clear, with a low around 23. Calm wind becoming northwest around 5 mph.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.

    High: 48 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. South wind around 5 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. South wind around 5 mph becoming west in the afternoon.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.

    Low: 18 °F

    Partly Cloudy
    then Chance
    Snow

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.

    High: 29 °F

    Chance Snow

Detailed Forecast

This Afternoon
A chance of rain and snow before 2pm, then a chance of rain between 2pm and 4pm, then a slight chance of rain and snow after 4pm. Mostly cloudy, with a high near 43. West wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tonight
Mostly clear, with a low around 23. Calm wind becoming northwest around 5 mph.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 28. South wind around 5 mph.
Saturday
Sunny, with a high near 56. South wind around 5 mph becoming west in the afternoon.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Partly sunny, with a high near 42.
Sunday Night
A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Monday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Tuesday Night
Rain and snow likely. Cloudy, with a low around 28. Chance of precipitation is 60%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
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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:
4:12 am EST Feb 26, 2026
Forecast Valid:
12pm EST Feb 26, 2026-6pm EST Mar 4, 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