Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Partly Cloudy

77°F

25°C

Humidity 88%
Wind Speed S 12 mph
Barometer 30.01 in (1015.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 30 Jun 5:53 am CDT
Extended Forecast for

Collin County Regional Airport TX

  • Today

    Today: Sunny, with a high near 96. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 15 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. Southeast wind around 10 mph.

    Low: 79 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 80. Southeast wind around 10 mph.

    Low: 80 °F

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny and hot, with a high near 100. South wind around 10 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 96. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 97. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 15 mph.
Thursday
Sunny, with a high near 97. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 79. Southeast wind around 10 mph.
Friday
Mostly sunny, with a high near 98. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 80. Southeast wind around 10 mph.
Independence Day
Mostly sunny and hot, with a high near 100. South wind around 10 mph.
Saturday Night
Mostly clear, with a low around 81.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Collin County Regional Airport TX
 33.19°N 96.57°W (Elev. 515 ft)
6:06 am CDT Jun 30, 2026
6am CDT Jun 30, 2026-6pm CDT Jul 6, 2026
 
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Additional Resources

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