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.

Fair

67°F

19°C

Humidity 62%
Wind Speed SW 6 mph
Barometer 29.93 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 1 Apr 1:15 am EDT
Extended Forecast for

3 Miles NNE Unionville PA

  • Overnight

    Overnight: A slight chance of showers before 3am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 65. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 80. West wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Slight Chance
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 49. East wind around 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: 49 °F

    Showers

  • Thursday

    Thursday: A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 55. East wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. East wind 5 to 10 mph.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.

    Low: 59 °F

    Chance Rain

Detailed Forecast

Overnight
A slight chance of showers before 3am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 65. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 80. West wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 49. East wind around 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.
Thursday
A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 55. East wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 47. East wind 5 to 10 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 59.
Saturday
A chance of rain after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Saturday Night
A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Sunday
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 58.
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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 pm EDT Mar 31, 2026
Forecast Valid:
1am EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation