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 >

Current conditions at

Palacios Municipal Airport (KPSX)

Lat: 28.72°NLon: 96.25°WElev: 13ft.

Fair

85°F

29°C

Humidity 82%
Wind Speed S 9 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 21 Aug 10:53 pm CDT
Extended Forecast for

Port O Connor TX

  • Tonight

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

    Low: 82 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Heat index values as high as 102. South wind 7 to 11 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 82. South wind 9 to 11 mph.

    Low: 82 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Heat index values as high as 102. South wind 7 to 10 mph.

    High: 88 °F

    Sunny

  • Sunday Night

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

    Low: 82 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. South southwest wind 8 to 10 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 83. South southeast wind around 14 mph, with gusts as high as 20 mph.

    Low: 83 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. South southeast wind 9 to 11 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 83. South southeast wind around 14 mph, with gusts as high as 20 mph.

    Low: 83 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 82. South wind around 10 mph.
Saturday
Sunny, with a high near 88. Heat index values as high as 102. South wind 7 to 11 mph.
Saturday Night
Mostly clear, with a low around 82. South wind 9 to 11 mph.
Sunday
Sunny, with a high near 88. Heat index values as high as 102. South wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 82. South wind around 10 mph.
Monday
Sunny, with a high near 88. South southwest wind 8 to 10 mph.
Monday Night
Mostly clear, with a low around 83. South southeast wind around 14 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 87. South southeast wind 9 to 11 mph.
Tuesday Night
Clear, with a low around 83. South southeast wind around 14 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 83.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 83.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port O Connor TX
 28.44°N 96.4°W
Last Update:
1:46 pm CDT Aug 21, 2026
Forecast Valid:
11pm CDT Aug 21, 2026-6pm CDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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