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.

Overcast

79°F

26°C

Humidity 84%
Wind Speed NA
Barometer 29.81 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index83°F (28°C)
Last update 18 May 5:53 am CDT
Extended Forecast for

Van Alstyne TX

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 87. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 87 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 73. South wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. 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: 84 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph becoming south southeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind around 10 mph. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 64. East northeast wind 5 to 10 mph.

    Low: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 76. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Thursday Night

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

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind around 5 mph.

    High: 78 °F

    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 87. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 73. South wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. 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.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph becoming south southeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind around 10 mph. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 64. East northeast wind 5 to 10 mph.
Thursday
Showers and possibly a thunderstorm. High near 76. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 64. East southeast wind around 5 mph. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind around 5 mph.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 64.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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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:
1:26 am CDT May 18, 2026
Forecast Valid:
6am CDT May 18, 2026-6pm CDT May 24, 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