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

Extreme Heat and Severe Thunderstorms Today

Extreme heat continues today from the central Plains to the lower Mississippi River Valley, over southeast Montana, and from southern California into the Southwest Deserts. Extreme Heat Warnings remain in effect. Severe thunderstorms capable of strong to severe wind gusts and large hail are possible across the Great Lakes into the Ohio Valley today into tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

87°F

31°C

Humidity 72%
Wind Speed S 12 mph
Barometer 29.88 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 27 Jul 7:15 pm CDT
Extended Forecast for

7 Miles SE Port Lavaca TX

Heat Advisory July 28, 12:00pm until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 79. South wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Heat index values as high as 103. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 80. South southeast wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Heat index values as high as 106. South wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. South southeast wind 8 to 13 mph.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. South southeast wind 6 to 13 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 81. South southeast wind 10 to 14 mph.

    Low: 81 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 90. South southwest wind 8 to 14 mph.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 81. South wind around 14 mph, with gusts as high as 18 mph.

    Low: 81 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 79. South wind 9 to 13 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 91. Heat index values as high as 103. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 80. South southeast wind 9 to 13 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 92. Heat index values as high as 106. South wind 7 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 80. South southeast wind 8 to 13 mph.
Thursday
Sunny, with a high near 92. South southeast wind 6 to 13 mph.
Thursday Night
Mostly clear, with a low around 81. South southeast wind 10 to 14 mph.
Friday
Mostly sunny, with a high near 90. South southwest wind 8 to 14 mph.
Friday Night
Partly cloudy, with a low around 81. South wind around 14 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Partly cloudy, with a low around 82.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81.
Monday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SE Port Lavaca TX
 28.56°N 96.53°W
Last Update:
2:11 pm CDT Jul 27, 2026
Forecast Valid:
7pm CDT Jul 27, 2026-6pm CDT Aug 3, 2026
 
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Additional Resources

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Chance of Precipitation