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.

Light Snow Fog/Mist

37°F

3°C

Humidity 86%
Wind Speed NW 18 G 30 mph
Barometer 29.84 in
Dewpoint 33°F (1°C)
Visibility 1.50 mi
Wind Chill27°F (-3°C)
Last update 12 Mar 12:15 pm EDT
Extended Forecast for

3 Miles NNE Unionville PA

  • This Afternoon

    This Afternoon: Rain likely before 1pm, then rain and snow likely. Cloudy, with a steady temperature around 38. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 38 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 5 to 10 mph.

    Low: 28 °F

    Gradual
    Clearing

  • Friday

    Friday: Mostly sunny, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 48 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. West wind 10 to 15 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 55.

    High: 55 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 66. Breezy. Chance of precipitation is 90%.

    High: 66 °F

    Rain and
    Breezy

Detailed Forecast

This Afternoon
Rain likely before 1pm, then rain and snow likely. Cloudy, with a steady temperature around 38. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Mostly clear, with a low around 38. West wind around 10 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 51. West wind 10 to 15 mph.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Cloudy, with a high near 55.
Sunday Night
Rain, mainly after 2am. Low around 48. Chance of precipitation is 80%.
Monday
Rain. High near 66. Breezy. Chance of precipitation is 90%.
Monday Night
A chance of rain before 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
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:
6:09 am EDT Mar 12, 2026
Forecast Valid:
12pm EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation