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.

A Few Clouds

86°F

30°C

Humidity 67%
Wind Speed S 9 mph
Barometer 29.74 in (1006.4 mb)
Dewpoint 74°F (23°C)
Visibility 9.00 mi
Heat Index94°F (34°C)
Last update 21 Jun 8:53 pm CDT
Extended Forecast for

Van Alstyne TX

  • Tonight

    Tonight: Showers and possibly a thunderstorm after 4am. Low around 73. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Partly Cloudy
    then Showers

  • Monday

    Monday: Showers and thunderstorms, mainly before 1pm. High near 90. Heat index values as high as 98. South wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Partly cloudy, with a low around 76. South southeast wind around 10 mph.

    Low: 76 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 10am and 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Southeast wind around 10 mph becoming south southwest in the morning. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms

  • Tuesday Night

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

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South southwest wind around 10 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southeast wind around 10 mph.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 92. South wind around 10 mph.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. South wind 10 to 15 mph.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and possibly a thunderstorm after 4am. Low around 73. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and thunderstorms, mainly before 1pm. High near 90. Heat index values as high as 98. South wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Partly cloudy, with a low around 76. South southeast wind around 10 mph.
Tuesday
A slight chance of showers and thunderstorms between 10am and 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Southeast wind around 10 mph becoming south southwest in the morning. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 77. South southeast wind around 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South southwest wind around 10 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southeast wind around 10 mph.
Thursday
Mostly sunny, with a high near 92. South wind around 10 mph.
Thursday Night
Partly cloudy, with a low around 76. South wind 10 to 15 mph.
Friday
Partly sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 94.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Mostly sunny, with a high near 96. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Van Alstyne TX
 33.42°N 96.57°W (Elev. 761 ft)
Last Update:
6:11 pm CDT Jun 21, 2026
Forecast Valid:
9pm CDT Jun 21, 2026-6pm CDT Jun 28, 2026
 
Forecast Discussion
 
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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