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.

58°F

14°C

Humidity 100%
Wind Speed NE 9 mph
Barometer 29.81 in
Dewpoint 58°F (14°C)
Visibility 9.00 mi
Last update 11 Oct 10:35 pm EDT
Extended Forecast for

Unionville PA

  • Tonight

    Tonight: Showers, mainly before 2am. Low around 57. Northeast wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers

  • Columbus Day

    Columbus Day: A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 72. North wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 75. Light west wind becoming south 5 to 10 mph in the afternoon.

    High: 75 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Southwest wind around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Partly cloudy, with a low around 53. Chance of precipitation is 40%.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Showers, mainly before 2am. Low around 57. Northeast wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
A chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 72. North wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 75. Light west wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 62. Southwest wind around 5 mph.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
A chance of showers after 2am. Partly cloudy, with a low around 53. Chance of precipitation is 40%.
Friday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 53. Breezy.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Unionville PA
 39.89°N 75.72°W (Elev. 400 ft)
Last Update:
9:22 pm EDT Oct 11, 2026
Forecast Valid:
10pm EDT Oct 11, 2026-6pm EDT Oct 18, 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