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

Fire Weather Concerns and Severe Thunderstorms through the Weekend

Dry and windy conditions, and some dry thunderstorms and lightning, may support hazardous fire activity in the northern Plains, high southern Plains and the Southwest this weekend. An active severe weather pattern is forecast for portions of the central and southern High Plains into the Upper Midwest through early the part of next week. Damaging winds, large hail, and tornadoes are possible. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

72°F

22°C

Humidity 96%
Wind Speed SE 6 mph
Barometer 29.87 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 16 May 6:15 am CDT
Extended Forecast for

Port Lavaca TX

  • Today

    Today: Partly sunny, with a high near 88. Heat index values as high as 96. South southeast wind 11 to 20 mph, with gusts as high as 25 mph.

    High: 88 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 78. Southeast wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 89. Heat index values as high as 102. South southeast wind 15 to 22 mph, with gusts as high as 30 mph.

    High: 89 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 79. Southeast wind 16 to 18 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 90. South southeast wind 15 to 22 mph, with gusts as high as 29 mph.

    High: 90 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 79. Southeast wind 14 to 20 mph, with gusts as high as 28 mph.

    Low: 79 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 89. South southeast wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 89 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 77. Southeast wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Southeast wind 10 to 15 mph, with gusts as high as 18 mph.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 88. Heat index values as high as 96. South southeast wind 11 to 20 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 78. Southeast wind 14 to 17 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 89. Heat index values as high as 102. South southeast wind 15 to 22 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 79. Southeast wind 16 to 18 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 90. South southeast wind 15 to 22 mph, with gusts as high as 29 mph.
Monday Night
Mostly cloudy, with a low around 79. Southeast wind 14 to 20 mph, with gusts as high as 28 mph.
Tuesday
Mostly cloudy, with a high near 89. South southeast wind 13 to 17 mph, with gusts as high as 24 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 77. Southeast wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Southeast wind 10 to 15 mph, with gusts as high as 18 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 76.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.64°W
Last Update:
1:46 am CDT May 16, 2026
Forecast Valid:
6am CDT May 16, 2026-6pm CDT May 22, 2026
 
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