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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Partly Cloudy

88°F

31°C

Humidity 72%
Wind Speed S 10 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 27 Jun 7:35 pm CDT
Extended Forecast for

Port Lavaca TX

  • Tonight

    Tonight: Partly cloudy, with a low around 78. Southeast wind 7 to 13 mph.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: Widespread haze after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 104. Light south wind becoming east southeast 8 to 13 mph in the morning.

    High: 90 °F

    Mostly Sunny
    then Haze

  • Saturday Night

    Saturday Night: Widespread haze. Partly cloudy, with a low around 78. Southeast wind 7 to 14 mph.

    Low: 78 °F

    Haze

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 10am. Widespread haze. Partly sunny, with a high near 89. Heat index values as high as 103. South southeast wind 6 to 14 mph. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Widespread haze. Partly cloudy, with a low around 79. South southeast wind 8 to 14 mph.

    Low: 79 °F

    Haze then
    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 10am. Widespread haze. Mostly sunny, with a high near 90. South southeast wind 7 to 14 mph. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Widespread haze. Partly cloudy, with a low around 77. South southeast wind 6 to 13 mph.

    Low: 77 °F

    Haze then
    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Widespread haze. Mostly sunny, with a high near 91. Southeast wind 5 to 13 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Widespread haze. Partly cloudy, with a low around 78. South southeast wind 6 to 11 mph.

    Low: 78 °F

    Haze

Detailed Forecast

Tonight
Partly cloudy, with a low around 78. Southeast wind 7 to 13 mph.
Saturday
Widespread haze after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 104. Light south wind becoming east southeast 8 to 13 mph in the morning.
Saturday Night
Widespread haze. Partly cloudy, with a low around 78. Southeast wind 7 to 14 mph.
Sunday
Showers likely, with thunderstorms also possible after 10am. Widespread haze. Partly sunny, with a high near 89. Heat index values as high as 103. South southeast wind 6 to 14 mph. Chance of precipitation is 70%.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Widespread haze. Partly cloudy, with a low around 79. South southeast wind 8 to 14 mph.
Monday
A chance of showers, with thunderstorms also possible after 10am. Widespread haze. Mostly sunny, with a high near 90. South southeast wind 7 to 14 mph. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Widespread haze. Partly cloudy, with a low around 77. South southeast wind 6 to 13 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Widespread haze. Mostly sunny, with a high near 91. Southeast wind 5 to 13 mph.
Tuesday Night
Widespread haze. Partly cloudy, with a low around 78. South southeast wind 6 to 11 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Widespread haze. Partly sunny, with a high near 91.
Wednesday Night
Widespread haze. Mostly cloudy, with a low around 78.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Thursday Night
Mostly cloudy, with a low around 79.
Independence Day
Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.64°W
Last Update:
12:11 pm CDT Jun 27, 2025
Forecast Valid:
7pm CDT Jun 27, 2025-6pm CDT Jul 4, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation