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.

70°F

21°C

Humidity 84%
Wind Speed Vrbl 6 mph
Barometer 29.92 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 13 Oct 7:35 pm EDT
Extended Forecast for

Coatesville PA

  • Tonight

    Tonight: Clear, with a low around 65. Southwest wind 5 to 10 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: A slight chance of showers after 11am. Increasing clouds, with a high near 82. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. North wind around 5 mph.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 2pm. Mostly sunny, with a high near 67. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 67 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 55. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 76. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 43. Breezy. Chance of precipitation is 80%.

    Low: 43 °F

    Breezy.
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52. Breezy.

    High: 52 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Patchy frost after 2am. Otherwise, clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

Detailed Forecast

Tonight
Clear, with a low around 65. Southwest wind 5 to 10 mph.
Wednesday
A slight chance of showers after 11am. Increasing clouds, with a high near 82. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 55. North wind around 5 mph.
Thursday
A slight chance of showers after 2pm. Mostly sunny, with a high near 67. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.
Thursday Night
Showers, mainly after 2am. Low around 55. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 2pm. High near 76. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers before 8pm. Low around 43. Breezy. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 52. Breezy.
Saturday Night
Patchy frost after 2am. Otherwise, clear, with a low around 35.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 63.
Monday Night
Mostly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coatesville PA
 39.99°N 75.82°W (Elev. 400 ft)
Last Update:
4:09 pm EDT Oct 13, 2026
Forecast Valid:
7pm EDT Oct 13, 2026-6pm EDT Oct 20, 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