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.

Fog/Mist

57°F

14°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 29.97 in
Dewpoint 57°F (14°C)
Visibility 2.50 mi
Last update 16 Oct 5:35 am EDT
Extended Forecast for

South Coatesville PA

  • Overnight

    Overnight: Showers. Low around 56. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Showers

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 5pm. High near 78. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 46. Northwest wind around 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 51. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 51 °F

    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Patchy frost after 3am. Otherwise, clear, with a low around 34. North wind 5 to 10 mph.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers. Low around 56. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, then showers and possibly a thunderstorm after 5pm. High near 78. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 46. Northwest wind around 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Partly sunny, with a high near 51. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Patchy frost after 3am. Otherwise, clear, with a low around 34. North wind 5 to 10 mph.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Coatesville PA
 39.96°N 75.82°W (Elev. 420 ft)
Last Update:
4:09 am EDT Oct 16, 2026
Forecast Valid:
5am EDT Oct 16, 2026-6pm EDT Oct 22, 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