Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Mostly Cloudy with Haze

89°F

32°C

Humidity 73%
Wind Speed S 12 G 21 mph
Barometer 29.90 in
Dewpoint 79°F (26°C)
Visibility 5.00 mi
Heat Index105°F (41°C)
Last update 4 Aug 6:55 pm CDT
Extended Forecast for

Port Lavaca TX

  • Tonight

    Tonight: Mostly clear, with a low around 78. South southeast wind 6 to 14 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Heat index values as high as 110. South wind 6 to 13 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southeast wind 6 to 13 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Heat index values as high as 110. South southeast wind 5 to 13 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. Southeast wind 5 to 13 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 92. Light south southeast wind becoming southeast 6 to 11 mph in the morning.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 78. Southeast wind 8 to 13 mph becoming light south southeast  after midnight.

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Light southeast wind increasing to 8 to 13 mph in the morning.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. Southeast wind 8 to 13 mph becoming light south southeast  after midnight.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 78. South southeast wind 6 to 14 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 93. Heat index values as high as 110. South wind 6 to 13 mph.
Wednesday Night
Mostly clear, with a low around 78. South southeast wind 6 to 13 mph.
Thursday
Sunny, with a high near 93. Heat index values as high as 110. South southeast wind 5 to 13 mph.
Thursday Night
Mostly clear, with a low around 78. Southeast wind 5 to 13 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Light south southeast wind becoming southeast 6 to 11 mph in the morning.
Friday Night
Mostly clear, with a low around 78. Southeast wind 8 to 13 mph becoming light south southeast after midnight.
Saturday
Sunny, with a high near 91. Light southeast wind increasing to 8 to 13 mph in the morning.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 8 to 13 mph becoming light south southeast after midnight.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 79.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 80.
Tuesday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.64°W
4:16 pm CDT Aug 4, 2026
7pm CDT Aug 4, 2026-6pm CDT Aug 11, 2026
 
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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