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

80°F

27°C

Humidity 67%
Wind Speed N 5 mph
Barometer 29.94 in (1012.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 12:53 am CDT
Extended Forecast for

Van Alstyne TX

Heat Advisory August 27, 01:03am until August 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 27, 01:03am until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Overnight

    Low: 76 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 98. Heat index values as high as 107. Northeast wind 5 to 10 mph.

    High: 98 °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 105. 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

Overnight
A 20 percent chance of showers before 4am. Mostly clear, with a low around 76. Northeast wind around 5 mph.
Thursday
Sunny, with a high near 98. Heat index values as high as 107. 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 105. 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 97.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Van Alstyne TX
 33.41°N 96.6°W (Elev. 755 ft)
9:26 pm CDT Aug 26, 2026
1am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database