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

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

99°F

37°C

Humidity 47%
Wind Speed SE 9 mph
Barometer 29.97 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index113°F (45°C)
Last update 22 Aug 3:55 pm CDT
Extended Forecast for

3 Miles WNW Long Mott TX

Heat Advisory until August 22, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 22, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 78. South wind 5 to 10 mph becoming light south southwest after midnight.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Heat index values as high as 105. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph becoming light south after midnight.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 79. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 79 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 80. South southeast wind 7 to 11 mph.

    Low: 80 °F

    Clear

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 95. Heat index values as high as 106. South southeast wind around 10 mph.
Tonight
Mostly clear, with a low around 78. South wind 5 to 10 mph becoming light south southwest after midnight.
Sunday
Sunny, with a high near 95. Heat index values as high as 105. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph becoming light south after midnight.
Monday
Sunny, with a high near 94. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.
Monday Night
Clear, with a low around 79. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 94. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.
Tuesday Night
Clear, with a low around 80. South southeast wind 7 to 11 mph.
Wednesday
Sunny, with a high near 94. South southwest wind 5 to 11 mph.
Wednesday Night
Clear, with a low around 80.
Thursday
Sunny, with a high near 95.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 80.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 80.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Long Mott TX
 28.48°N 96.82°W
Last Update:
1:46 pm CDT Aug 22, 2026
Forecast Valid:
4pm CDT Aug 22, 2026-6pm CDT Aug 29, 2026
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

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Chance of Precipitation