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

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 >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

94°F

34°C

Humidity 38%
Wind Speed N 5 mph
Barometer 29.88 in (1010.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 26 Aug 6:53 pm CDT
Extended Forecast for

4 Miles WSW Mc Kinney TX

Heat Advisory August 26, 07:40pm until August 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 26, 07:40pm until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 78 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 109. Northeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. East wind 5 to 10 mph.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 98. Heat index values as high as 106. East wind 5 to 10 mph.

    High: 98 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. South southeast wind around 10 mph.

    Low: 78 °F

    Mostly 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 slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 4am. Mostly clear, with a low around 78. North wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 109. Northeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 76. East wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 98. Heat index values as high as 106. East wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 78. South southeast wind around 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 78. South wind 10 to 15 mph.
Monday
Sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mc Kinney TX
 33.17°N 96.7°W (Elev. 719 ft)
Last Update:
6:06 pm CDT Aug 26, 2026
Forecast Valid:
7pm CDT Aug 26, 2026-6pm CDT Sep 2, 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