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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

75°F

24°C

Humidity 79%
Wind Speed Calm
Barometer 30.06 in (1017.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Aug 7:53 am CDT
Extended Forecast for

Van Alstyne TX

  • Today

    Today: Sunny and hot, with a high near 99. Light east northeast wind increasing to 5 to 10 mph in the afternoon.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 74. East wind around 5 mph.

    Low: 74 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 98. East southeast wind around 5 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

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

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South southeast wind around 10 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 98. South wind around 10 mph.

    High: 98 °F

    Sunny

  • Monday Night

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

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. South wind around 10 mph.

    High: 96 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 99. Light east northeast wind increasing to 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 74. East wind around 5 mph.
Saturday
Sunny, with a high near 98. East southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 75. Southeast wind around 5 mph.
Sunday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 76. South southeast wind around 10 mph.
Monday
Sunny, with a high near 98. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 77. South southeast wind around 10 mph.
Tuesday
Sunny, with a high near 96. South wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Van Alstyne TX
 33.42°N 96.57°W (Elev. 761 ft)
Last Update:
6:06 am CDT Aug 28, 2026
Forecast Valid:
8am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation