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.

53°F

12°C

Humidity 94%
Wind Speed SE 9 mph
Barometer 29.56 in
Dewpoint 52°F (11°C)
Visibility 9.00 mi
Wind Chill50°F (10°C)
Last update 12 Nov 8:15 am EST
Extended Forecast for

South Coatesville PA

  • Today

    Today: Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 59. East wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Tonight

    Tonight: Showers likely, mainly between 3am and 5am. Cloudy, with a low around 37. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers
    Likely

  • Friday

    Friday: Rain, mainly before 1pm. High near 44. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 31. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 31 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 46. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 59. East wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely, mainly between 3am and 5am. Cloudy, with a low around 37. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before 1pm. High near 44. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of rain before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 31. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 29.
Wednesday
Sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Coatesville PA
 39.99°N 75.82°W (Elev. 400 ft)
Last Update:
4:07 am EST Nov 12, 2026
Forecast Valid:
8am EST Nov 12, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation