Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

86°F

30°C

Humidity 51%
Wind Speed Calm
Barometer 29.94 in (1013.0 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 26 Aug 10:53 pm CDT
Extended Forecast for

McKinney TX

Heat Advisory August 26, 11:21pm until August 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 26, 11:21pm until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 75 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 98. Heat index values as high as 105. Northeast wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph becoming light east  after midnight.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 96. Heat index values as high as 102. Light east wind increasing to 5 to 10 mph in the morning.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. South southeast wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. South wind around 10 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
A 20 percent chance of showers before 4am. Mostly clear, with a low around 75. North northwest wind around 5 mph becoming northeast after midnight.
Thursday
Sunny, with a high near 98. Heat index values as high as 105. Northeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph becoming light east after midnight.
Friday
Mostly sunny, with a high near 96. Heat index values as high as 102. Light east wind increasing to 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 98. South southeast wind 5 to 10 mph.
Saturday Night
Clear, with a low around 76. South southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 99. South wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 75. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 100.
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ABOUT THIS FORECAST

 
Point Forecast:
McKinney TX
 33.19°N 96.59°W (Elev. 554 ft)
9:26 pm CDT Aug 26, 2026
11pm CDT Aug 26, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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