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

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

78°F

26°C

Humidity 97%
Wind Speed Calm
Barometer 29.83 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 3 Aug 1:55 am CDT
Extended Forecast for

6 Miles SE Port Lavaca TX

  • Overnight

    Overnight: Mostly clear, with a low around 78. Light southwest wind.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Heat index values as high as 105. Light south southwest wind becoming south southeast 6 to 11 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South wind 7 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Heat index values as high as 105. South southeast wind 5 to 13 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. South southeast wind 6 to 11 mph.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. South southeast wind 5 to 13 mph.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 79. South southeast wind 6 to 11 mph.

    Low: 79 °F

    Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. South wind 5 to 13 mph.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 81. Southeast wind 7 to 14 mph, with gusts as high as 18 mph.

    Low: 81 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 78. Light southwest wind.
Monday
Sunny, with a high near 92. Heat index values as high as 105. Light south southwest wind becoming south southeast 6 to 11 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. South wind 7 to 10 mph.
Tuesday
Sunny, with a high near 91. Heat index values as high as 105. South southeast wind 5 to 13 mph.
Tuesday Night
Mostly clear, with a low around 79. South southeast wind 6 to 11 mph.
Wednesday
Sunny, with a high near 91. South southeast wind 5 to 13 mph.
Wednesday Night
Clear, with a low around 79. South southeast wind 6 to 11 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. South wind 5 to 13 mph.
Thursday Night
Mostly clear, with a low around 81. Southeast wind 7 to 14 mph, with gusts as high as 18 mph.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 81.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 81.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Port Lavaca TX
 28.56°N 96.53°W
Last Update:
1:46 am CDT Aug 3, 2026
Forecast Valid:
2am CDT Aug 3, 2026-6pm CDT Aug 9, 2026
 
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Additional Resources

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Chance of Precipitation