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

32°F

0°C

Humidity 65%
Wind Speed SW 5 mph
Barometer 29.58 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 1 Jan 2:35 am EST
Extended Forecast for

3 Miles NNE Unionville PA

  • Overnight

    Overnight: Snow showers likely, mainly after 5am. The snow could be heavy at times. Mostly cloudy, with a low around 24. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Heavy Snow

  • New Year's Day

    New Year's Day: A chance of snow showers before 8am. The snow could be heavy at times. Partly sunny, with a high near 30. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Heavy Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 18. West wind 5 to 10 mph.

    Low: 18 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 34. West wind 5 to 10 mph.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20. West wind around 5 mph.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers likely, mainly after 5am. The snow could be heavy at times. Mostly cloudy, with a low around 24. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
New Year's Day
A chance of snow showers before 8am. The snow could be heavy at times. Partly sunny, with a high near 30. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 18. West wind 5 to 10 mph.
Friday
Partly sunny, with a high near 34. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 20. West wind around 5 mph.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
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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:
7:15 pm EST Dec 31, 2025
Forecast Valid:
2am EST Jan 1, 2026-6pm EST Jan 7, 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