Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

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. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

80°F

27°C

Humidity 74%
Wind Speed E 7 mph
Barometer 30.00 in (1015.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 8:53 am CDT
Extended Forecast for

Collin County Regional Airport TX

Heat Advisory August 27, 09:10am until August 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 27, 09:10am until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Northeast wind 5 to 10 mph becoming light  after midnight.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 98. Light north northeast wind becoming east northeast 5 to 10 mph in the morning.

    High: 98 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. East 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: Mostly clear, with a low around 76. Southeast wind around 10 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. South wind 10 to 15 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 76. South southeast wind around 10 mph.

    Low: 76 °F

    Clear

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 103. Northeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 74. Northeast wind 5 to 10 mph becoming light after midnight.
Friday
Sunny, with a high near 98. Light north northeast wind becoming east northeast 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 74. East wind 5 to 10 mph.
Saturday
Sunny, with a high near 98. South southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 76. Southeast wind around 10 mph.
Sunday
Sunny and hot, with a high near 99. South wind 10 to 15 mph.
Sunday Night
Clear, with a low around 76. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 99. South wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Collin County Regional Airport TX
 33.19°N 96.59°W (Elev. 554 ft)
6:06 am CDT Aug 27, 2026
9am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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