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

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

79°F

26°C

Humidity 82%
Wind Speed S 8 mph
Barometer 30.01 in (1015.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 15 Jul 1:53 am CDT
Extended Forecast for

Van Alstyne TX

  • Overnight

    Overnight: Partly cloudy, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. South wind 5 to 10 mph.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 93. Heat index values as high as 102. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. South wind 5 to 10 mph.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. South wind 5 to 10 mph becoming light south southwest after midnight.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96. Calm wind becoming south around 5 mph in the morning.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. South wind around 5 mph.
Tuesday
A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. South wind 5 to 10 mph.
Wednesday
Sunny, with a high near 93. Heat index values as high as 102. South wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 96. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 74. South wind 5 to 10 mph becoming light south southwest after midnight.
Friday
Sunny, with a high near 96. Calm wind becoming south around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Mostly sunny, with a high near 98.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Van Alstyne TX
 33.42°N 96.57°W (Elev. 761 ft)
Last Update:
12:24 am CDT Jul 15, 2025
Forecast Valid:
2am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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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