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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

66°F

19°C

Humidity 100%
Wind Speed S 7 mph
Barometer 30.15 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 20 Mar 9:35 am CDT
Extended Forecast for

Port Lavaca TX

  • Today

    Today: Sunny, with a high near 80. South wind 6 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 62. South wind 8 to 13 mph, with gusts as high as 18 mph.

    Low: 62 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 82. South southwest wind 7 to 16 mph, with gusts as high as 21 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. South southwest wind 9 to 17 mph, with gusts as high as 23 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 62. South southeast wind 8 to 14 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 83. South wind 6 to 11 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Southeast wind 5 to 13 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Light south southeast wind increasing to 9 to 14 mph in the morning.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 80. South wind 6 to 15 mph, with gusts as high as 20 mph.
Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 62. South wind 8 to 13 mph, with gusts as high as 18 mph.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 82. South southwest wind 7 to 16 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 63. South wind 10 to 14 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 82. South southwest wind 9 to 17 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 62. South southeast wind 8 to 14 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 83. South wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 63. Southeast wind 5 to 13 mph.
Tuesday
Mostly sunny, with a high near 81. Light south southeast wind increasing to 9 to 14 mph in the morning.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.64°W
Last Update:
1:51 am CDT Mar 20, 2026
Forecast Valid:
9am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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