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

39°F

4°C

Humidity 81%
Wind Speed NW 5 mph
Barometer 30.09 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 8 Jan 3:55 am EST
Extended Forecast for

Coatesville PA

  • Today

    Today: Sunny, with a high near 48. Northwest wind around 5 mph becoming calm.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 1pm. Mostly cloudy, with a high near 54. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely. Cloudy, with a low around 49. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain Likely

  • Saturday

    Saturday: Rain. High near 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 59 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Cloudy, with a low around 41. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Rain Likely

  • Sunday

    Sunday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Sunday Night

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

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 48. Northwest wind around 5 mph becoming calm.
Tonight
Mostly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph.
Friday
A chance of rain after 1pm. Mostly cloudy, with a high near 54. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely. Cloudy, with a low around 49. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Cloudy, with a low around 41. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Sunny, with a high near 38.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Coatesville PA
 39.99°N 75.82°W (Elev. 400 ft)
Last Update:
4:12 pm EST Jan 7, 2026
Forecast Valid:
4am EST Jan 8, 2026-6pm EST Jan 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation