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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Partly Cloudy

84°F

29°C

Humidity 61%
Wind Speed SE 5 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 23 Aug 8:53 am CDT
Extended Forecast for

2 Miles ESE Lucas TX

Extreme Heat Warning August 23, 12:00pm until August 23, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny and hot, with a high near 104. South wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 83. South wind 5 to 10 mph.

    Low: 83 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 106. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 106 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 82. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 104. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 104 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 82. South wind around 10 mph.

    Low: 82 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. West wind around 10 mph.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 79. North wind around 5 mph becoming east after midnight.

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 100. East northeast wind 5 to 10 mph becoming north northwest in the morning.

    High: 100 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 104. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 83. South wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 106. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 82. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 104. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 82. South wind around 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. West wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 79. North wind around 5 mph becoming east after midnight.
Thursday
Sunny and hot, with a high near 100. East northeast wind 5 to 10 mph becoming north northwest in the morning.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 78.
Saturday
Sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Lucas TX
 33.1°N 96.54°W (Elev. 499 ft)
Last Update:
9:08 am CDT Aug 23, 2026
Forecast Valid:
9am CDT Aug 23, 2026-6pm CDT Aug 29, 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