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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

60°F

16°C

Humidity 86%
Wind Speed NE 7 mph
Barometer 30.13 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Sep 5:35 am EDT
Extended Forecast for

Thorndale PA

  • Today

    Today: Mostly sunny, with a high near 75. East wind around 5 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 74. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 11pm, then showers likely. Low around 57. Southwest wind around 5 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 67. Northeast wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 40%.

    High: 61 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 30%.

    High: 60 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 75. East wind around 5 mph.
Tonight
Mostly cloudy, with a low around 59. Southeast wind around 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 74. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms before 11pm, then showers likely. Low around 57. Southwest wind around 5 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 67. Northeast wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thorndale PA
 39.98°N 75.73°W (Elev. 499 ft)
Last Update:
4:09 am EDT Sep 19, 2026
Forecast Valid:
5am EDT Sep 19, 2026-6pm EDT Sep 25, 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