Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

87°F

31°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 30.01 in
Dewpoint 81°F (27°C)
Visibility 9.00 mi
Heat Index105°F (41°C)
Last update 28 Aug 9:15 am CDT
Extended Forecast for

6 Miles SE Port Lavaca TX

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm.  Mostly sunny, with a high near 93. Heat index values as high as 107. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 93 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Mostly clear, with a low around 78. South southeast wind 5 to 9 mph becoming calm  in the evening.

    Low: 78 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93. Heat index values as high as 106. Light and variable wind becoming southeast 6 to 11 mph in the afternoon.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 78. Southeast wind 5 to 9 mph becoming calm  in the evening.

    Low: 78 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Light south southwest wind becoming southeast 6 to 11 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. Light south wind becoming south southeast 8 to 13 mph in the morning.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. Southeast wind 5 to 11 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 93. Light south wind becoming southeast 8 to 13 mph in the morning.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 93. Heat index values as high as 107. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 78. South southeast wind 5 to 9 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93. Heat index values as high as 106. Light and variable wind becoming southeast 6 to 11 mph in the afternoon.
Saturday Night
Clear, with a low around 78. Southeast wind 5 to 9 mph becoming calm in the evening.
Sunday
Sunny, with a high near 93. Light south southwest wind becoming southeast 6 to 11 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 93. Light south wind becoming south southeast 8 to 13 mph in the morning.
Monday Night
Mostly clear, with a low around 79. Southeast wind 5 to 11 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Light south wind becoming southeast 8 to 13 mph in the morning.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Port Lavaca TX
 28.53°N 96.56°W
1:46 am CDT Aug 28, 2026
9am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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