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.

A Few Clouds

78°F

26°C

Humidity 100%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 23 Aug 3:15 am CDT
Extended Forecast for

2 Miles N Tivoli TX

Heat Advisory August 23, 12:00pm until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 75. Southwest wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 105. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. Heat index values as high as 107. Light and variable wind becoming south southeast 6 to 11 mph in the morning.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South southeast wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. South southeast wind 5 to 11 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 75. South southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. South southwest wind 5 to 11 mph.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Southwest wind around 5 mph.
Sunday
Sunny and hot, with a high near 97. 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 75. South southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 96. Heat index values as high as 107. Light and variable wind becoming south southeast 6 to 11 mph in the morning.
Monday Night
Mostly clear, with a low around 75. South southeast wind 7 to 11 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 96. South southeast wind 5 to 11 mph.
Tuesday Night
Clear, with a low around 75. South southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 96. South southwest wind 5 to 11 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny, with a high near 95.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Tivoli TX
 28.46°N 96.89°W
Last Update:
1:46 am CDT Aug 23, 2026
Forecast Valid:
3am 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