Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

91°F

33°C

Humidity 50%
Wind Speed SE 8 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 4 Sep 7:53 pm CDT
Extended Forecast for

Van Alstyne TX

  • Tonight

    Tonight: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph becoming light south  after midnight.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. Heat index values as high as 101. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 77 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 99. Light south wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph becoming light south after midnight.
Saturday
Sunny, with a high near 97. Heat index values as high as 101. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Labor Day
Sunny and hot, with a high near 99. Light south wind becoming south southeast 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
Van Alstyne TX
 33.42°N 96.57°W (Elev. 761 ft)
6:06 pm CDT Sep 4, 2026
7pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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Additional Resources

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