Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

79°F

26°C

Humidity 100%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Jun 7:55 pm EDT
Extended Forecast for

3 Miles S Thorndale PA

Heat Advisory June 19, 11:00am until June 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm.  Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Showers and thunderstorms likely, mainly between 3pm and 5pm.  Increasing clouds, with a high near 90. Southwest wind 5 to 15 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Sunny then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Southwest wind 5 to 10 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    T-storms
    Likely then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. Northwest wind around 10 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. West wind around 5 mph becoming calm.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Juneteenth
Showers and thunderstorms likely, mainly between 3pm and 5pm. Increasing clouds, with a high near 90. Southwest wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 82. Northwest wind around 10 mph.
Friday Night
Mostly clear, with a low around 64. West wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Thorndale PA
 39.95°N 75.74°W (Elev. 397 ft)
6:16 pm EDT Jun 18, 2025
8pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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Additional Resources

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