Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

94°F

34°C

Humidity 38%
Wind Speed N 5 mph
Barometer 29.88 in (1010.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 26 Aug 6:53 pm CDT
Extended Forecast for

Van Alstyne TX

Heat Advisory August 26, 07:48pm until August 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 26, 07:48pm until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 75 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 97. Heat index values as high as 105. Northeast wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 96. Heat index values as high as 104. East wind 5 to 10 mph.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. South wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. South southeast wind around 10 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97. South wind around 10 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 4am. Mostly clear, with a low around 75. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 97. Heat index values as high as 105. Northeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 96. Heat index values as high as 104. East wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph.
Saturday
Sunny, with a high near 97. South wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 75. South southeast wind around 10 mph.
Sunday
Sunny, with a high near 97. South wind around 10 mph.
Sunday Night
Clear, with a low around 75. South southeast wind around 10 mph.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 98.
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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 Aug 26, 2026
7pm CDT Aug 26, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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