Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

A Few Clouds

94°F

34°C

Humidity 58%
Wind Speed SE 16 mph
Barometer 29.97 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 29 Aug 3:35 pm CDT
Extended Forecast for

4 Miles SE Port Lavaca TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Heat index values as high as 103. Southeast wind 11 to 13 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 81. Southeast wind 6 to 11 mph.

    Low: 81 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Heat index values as high as 103. Light and variable wind becoming southeast 9 to 14 mph in the morning.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 82. Southeast wind 7 to 13 mph.

    Low: 82 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm.  Sunny, with a high near 89. Light south southeast wind becoming southeast 8 to 13 mph in the morning.  Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 82. Southeast wind 6 to 13 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Sunny, with a high near 89. Light south wind becoming southeast 6 to 11 mph in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 81. Southeast wind 5 to 11 mph.

    Low: 81 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms.  Sunny, with a high near 90. Light south wind becoming southeast 6 to 11 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Heat index values as high as 103. Southeast wind 11 to 13 mph.
Tonight
Mostly clear, with a low around 81. Southeast wind 6 to 11 mph.
Sunday
Sunny, with a high near 89. Heat index values as high as 103. Light and variable wind becoming southeast 9 to 14 mph in the morning.
Sunday Night
Mostly clear, with a low around 82. Southeast wind 7 to 13 mph.
Monday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Sunny, with a high near 89. Light south southeast wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 82. Southeast wind 6 to 13 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89. Light south wind becoming southeast 6 to 11 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 81. Southeast wind 5 to 11 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90. Light south wind becoming southeast 6 to 11 mph in the morning.
Wednesday Night
Mostly clear, with a low around 81.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 81.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Port Lavaca TX
 28.58°N 96.56°W
1:46 pm CDT Aug 29, 2026
3pm CDT Aug 29, 2026-6pm CDT Sep 4, 2026
 
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Additional Resources

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