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

93°F

34°C

Humidity 32%
Wind Speed E 6 mph
Barometer 29.92 in (1012.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 27 Aug 7:53 pm CDT
Extended Forecast for

Celina TX

  • Tonight

    Tonight: Mostly clear, with a low around 76. East wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. East wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 107. South wind around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

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

    Low: 78 °F

    Mostly Clear

  • Sunday

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

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 78. South southeast wind around 10 mph.

    Low: 78 °F

    Clear

  • Monday

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

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 76. East wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming east northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 77. East wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 107. South wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78. Southeast wind around 10 mph.
Sunday
Sunny and hot, with a high near 100. South wind around 10 mph.
Sunday Night
Clear, with a low around 78. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 99. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind around 10 mph.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Clear, with a low around 78.
Thursday
Sunny and hot, with a high near 100.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Celina TX
 33.32°N 96.78°W (Elev. 682 ft)
Last Update:
6:06 pm CDT Aug 27, 2026
Forecast Valid:
8pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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