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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fog/Mist

79°F

26°C

Humidity 98%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 78°F (26°C)
Visibility 6.00 mi
Heat Index84°F (29°C)
Last update 2 Oct 10:55 am CDT
Extended Forecast for

Port Lavaca TX

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 85. Heat index values as high as 101. East northeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 77. North northeast wind 8 to 13 mph.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 81. Heat index values as high as 93. North northeast wind 13 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 76. North northeast wind 11 to 17 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 76 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. North northeast wind 16 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. North northeast wind 11 to 20 mph, with gusts as high as 23 mph.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North northeast wind 16 to 21 mph, with gusts as high as 24 mph.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. North northeast wind around 14 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. North northeast wind 11 to 15 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 85. Heat index values as high as 101. East northeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 77. North northeast wind 8 to 13 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 81. Heat index values as high as 93. North northeast wind 13 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 76. North northeast wind 11 to 17 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. North northeast wind 16 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. North northeast wind 11 to 20 mph, with gusts as high as 23 mph.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North northeast wind 16 to 21 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 73. North northeast wind around 14 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 82. North northeast wind 11 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.61°W
Last Update:
1:41 am CDT Oct 2, 2026
Forecast Valid:
11am CDT Oct 2, 2026-6pm CDT Oct 8, 2026
 
Forecast Discussion
 
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Additional Resources

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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