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 70%
Wind Speed Vrbl 3 mph
Barometer 29.91 in (1012.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 20 Jun 2:53 pm CDT
Extended Forecast for

McKinney TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Heat index values as high as 99. Southeast wind around 5 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 79. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Mostly Clear
    then Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 94. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 94 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 10 mph.

    Low: 77 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of thunderstorms before 7am. Mostly sunny, with a high near 94. South southwest wind around 10 mph. Chance of precipitation is 30%.

    High: 94 °F

    Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind around 5 mph.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Heat index values as high as 99. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 79. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 94. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 10 mph.
Tuesday
A chance of thunderstorms before 7am. Mostly sunny, with a high near 94. South southwest wind around 10 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind around 5 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McKinney TX
 33.19°N 96.62°W (Elev. 587 ft)
Last Update:
1:26 pm CDT Jun 20, 2026
Forecast Valid:
3pm CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation