Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

Monsoonal flow coinciding with a frontal boundary will focus more showers and thunderstorms across the central Great Basin, central Rockies, Southwest into the Southern Plains. Heavy rainfall may bring about instances of flash flooding. Meanwhile, record setting heat continues for the Pacific Northwest through Monday. Heat combining with dry conditions could allow for any fires to quickly spread. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed SE 3 mph
Barometer 29.99 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 24 Aug 7:15 am EDT
Extended Forecast for

South Coatesville PA

  • Today

    Today: A slight chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 82. South wind 5 to 10 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 64. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 80. Northwest wind 5 to 10 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. West wind around 5 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. West wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. South wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 80. Northwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 56. West wind around 5 mph.
Tuesday
Sunny, with a high near 76. West wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
South Coatesville PA
 39.96°N 75.82°W (Elev. 420 ft)
4:11 am EDT Aug 24, 2025
7am EDT Aug 24, 2025-6pm EDT Aug 30, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database