National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

68°F

20°C

Humidity 63%
Wind Speed E 5 mph
Barometer 30.23 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 3 Oct 3:55 pm EDT
Extended Forecast for

Exton PA

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 8pm. Cloudy, with a low around 56. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 69. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 46. Northwest wind around 5 mph.

    Low: 46 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers, mainly before 8pm. Cloudy, with a low around 56. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 69. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 46. Northwest wind around 5 mph.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Exton PA
 40.03°N 75.64°W (Elev. 299 ft)
Last Update:
4:09 am EDT Oct 3, 2026
Forecast Valid:
4pm EDT Oct 3, 2026-6pm EDT Oct 10, 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