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.

Overcast

39°F

4°C

Humidity 94%
Wind Speed W 12 mph
Barometer 29.37 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 15 Jan 4:15 am EST
Extended Forecast for

Coatesville PA

  • Overnight

    Overnight: A chance of rain before 5am, then a chance of rain and snow. Cloudy, with a low around 29. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 29 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Cloudy through mid morning, then becoming mostly sunny, with a temperature falling to around 26 by 5pm. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.

    High: 31 °F⇓

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 18. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 18 °F

    Decreasing
    Clouds and
    Breezy

  • Friday

    Friday: Increasing clouds, with a high near 33. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 33 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. South wind 5 to 10 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 40. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain before 5am, then a chance of rain and snow. Cloudy, with a low around 29. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday
Cloudy through mid morning, then becoming mostly sunny, with a temperature falling to around 26 by 5pm. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 18. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Friday
Increasing clouds, with a high near 33. West wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 26. South wind 5 to 10 mph.
Saturday
A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 40. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 8.
Wednesday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coatesville PA
 40.01°N 75.81°W (Elev. 489 ft)
Last Update:
4:14 am EST Jan 15, 2026
Forecast Valid:
4am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation