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

45°F

7°C

Humidity 61%
Wind Speed Vrbl 5 mph
Barometer 30.08 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 26 Mar 1:15 am EDT
Extended Forecast for

3 Miles NNE Unionville PA

  • Overnight

    Overnight: Cloudy, with a low around 42. South wind around 10 mph.

    Low: 42 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 56. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly before 2pm. High near 58. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 28. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 28 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 42. South wind around 10 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 56. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers, mainly before 2pm. High near 58. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 28. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Partly sunny, with a high near 60. Chance of precipitation is 30%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 69. Chance of precipitation is 40%.
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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:
4:10 pm EDT Mar 25, 2026
Forecast Valid:
1am EDT Mar 26, 2026-6pm EDT Apr 1, 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