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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

91°F

33°C

Humidity 54%
Wind Speed Vrbl 3 mph
Barometer 30.08 in (1017.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 28 Aug 10:53 am CDT
Extended Forecast for

Allen TX

  • Today

    Today: Sunny and hot, with a high near 101. East northeast wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 77. East wind 5 to 10 mph.

    Low: 77 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 101. East southeast wind around 5 mph.

    High: 101 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. South wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. South southeast wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 100. South wind around 10 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southeast wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South wind around 10 mph.

    High: 99 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 101. East northeast wind 5 to 10 mph.
Tonight
Clear, with a low around 77. East wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 101. East southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 101. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 79. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 100. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 79. South southeast wind around 10 mph.
Tuesday
Sunny and hot, with a high near 99. South wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 80.
Thursday
Sunny and hot, with a high near 101.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Allen TX
 33.1°N 96.67°W (Elev. 656 ft)
Last Update:
6:06 am CDT Aug 28, 2026
Forecast Valid:
11am CDT Aug 28, 2026-6pm CDT Sep 3, 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