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

47°F

8°C

Humidity 39%
Wind Speed Vrbl 6 mph
Barometer 30.07 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 27 Feb 1:55 pm EST
Extended Forecast for

Coatesville PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. South wind around 5 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, sunny, with a high near 55. Calm wind becoming south around 5 mph in the morning.

    High: 55 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. Calm wind becoming east around 5 mph after midnight.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 43. Light and variable wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow and freezing rain after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.

    Low: 20 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: A chance of rain, snow, and freezing rain before 1pm, then rain likely. Cloudy, with a high near 39. Chance of precipitation is 60%.

    High: 39 °F

    Wintry Mix
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 49. South wind around 5 mph.
Tonight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 29. Calm wind.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 55. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Increasing clouds, with a low around 34. Calm wind becoming east around 5 mph after midnight.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 43. Light and variable wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Mostly cloudy, with a high near 31.
Monday Night
A chance of snow and freezing rain after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Tuesday
A chance of rain, snow, and freezing rain before 1pm, then rain likely. Cloudy, with a high near 39. Chance of precipitation is 60%.
Tuesday Night
Rain. Low around 34. Chance of precipitation is 80%.
Wednesday
A chance of rain. Cloudy, with a high near 50. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Cloudy, with a low around 37. Chance of precipitation is 40%.
Thursday
A chance of rain. Cloudy, with a high near 56. Chance of precipitation is 40%.
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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:
1:31 pm EST Feb 27, 2026
Forecast Valid:
2pm EST Feb 27, 2026-6pm EST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation