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

Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fog/Mist

83°F

28°C

Humidity 89%
Wind Speed SE 12 mph
Barometer 29.95 in
Dewpoint 79°F (26°C)
Visibility 4.00 mi
Heat Index94°F (34°C)
Last update 29 Jun 8:55 pm CDT
Extended Forecast for

Port Lavaca TX

  • Tonight

    Tonight: Widespread haze. Mostly clear, with a low around 81. South southeast wind 11 to 17 mph, with gusts as high as 22 mph.

    Low: 81 °F

    Haze

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Heat index values as high as 97. South southeast wind 9 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 80. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Heat index values as high as 99. South southeast wind 8 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. Southeast wind 8 to 15 mph, with gusts as high as 20 mph.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Southeast wind 5 to 14 mph, with gusts as high as 18 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79. Southeast wind 7 to 14 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. South southeast wind 5 to 14 mph, with gusts as high as 18 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 80. South southeast wind 8 to 14 mph, with gusts as high as 18 mph.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze. Mostly clear, with a low around 81. South southeast wind 11 to 17 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 87. Heat index values as high as 97. South southeast wind 9 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 80. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 87. Heat index values as high as 99. South southeast wind 8 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 80. Southeast wind 8 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 87. Southeast wind 5 to 14 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 79. Southeast wind 7 to 14 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 88. South southeast wind 5 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 80. South southeast wind 8 to 14 mph, with gusts as high as 18 mph.
Independence Day
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 80.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 80.
Monday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.61°W
Last Update:
1:46 pm CDT Jun 29, 2026
Forecast Valid:
9pm CDT Jun 29, 2026-6pm CDT Jul 6, 2026
 
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Additional Resources

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