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.

Light Rain

79°F

26°C

Humidity 82%
Wind Speed S 17 G 26 mph
Barometer 29.99 in (1015.0 mb)
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index82°F (28°C)
Last update 19 May 10:53 am CDT
Extended Forecast for

Van Alstyne TX

  • Today

    Today: Showers and thunderstorms. Temperature falling to around 72 by 1pm. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F⇓

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 7pm. Cloudy, with a low around 62. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North northeast wind 5 to 10 mph.

    High: 79 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 75. East southeast wind 5 to 10 mph. Chance of precipitation is 90%.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind around 5 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80. South wind around 5 mph.

    High: 80 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind around 5 mph.

    High: 80 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms. Temperature falling to around 72 by 1pm. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely, mainly before 7pm. Cloudy, with a low around 62. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North northeast wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 75. East southeast wind 5 to 10 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind around 5 mph. Chance of precipitation is 70%.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80. South wind around 5 mph.
Friday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind around 5 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Memorial Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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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:
6:07 am CDT May 19, 2026
Forecast Valid:
11am CDT May 19, 2026-6pm CDT May 25, 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