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

Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

93°F

34°C

Humidity 47%
Wind Speed SE 12 mph
Barometer 29.98 in (1014.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 8 Aug 5:53 pm CDT
Extended Forecast for

McKinney TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 78. South wind around 10 mph.

    Low: 78 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Heat index values as high as 105. South wind around 10 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 78. South southeast wind around 10 mph.

    Low: 78 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South wind around 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 100. Heat index values as high as 104. South wind 5 to 10 mph.
Sunday Night
Clear, with a low around 78. South wind around 10 mph.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 105. South wind around 10 mph.
Monday Night
Clear, with a low around 78. South southeast wind around 10 mph.
Tuesday
Sunny and hot, with a high near 100. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 101. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Clear, with a low around 79.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 79.
Saturday
Sunny and hot, with a high near 100.
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ABOUT THIS FORECAST

 
Point Forecast:
McKinney TX
 33.19°N 96.62°W (Elev. 587 ft)
Last Update:
6:12 pm CDT Aug 8, 2026
Forecast Valid:
6pm CDT Aug 8, 2026-6pm CDT Aug 15, 2026
 
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Additional Resources

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Chance of Precipitation