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.

Overcast

76°F

24°C

Humidity 98%
Wind Speed N 15 mph
Barometer 29.96 in
Dewpoint 75°F (24°C)
Visibility 9.00 mi
Heat Index75°F (24°C)
Last update 4 Oct 8:15 am CDT
Extended Forecast for

Port Lavaca TX

  • Today

    Today: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Heat index values as high as 89. North northeast wind 14 to 16 mph, with gusts as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 72. North northeast wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 86. Heat index values as high as 90. North northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. North wind around 9 mph, with gusts as high as 18 mph.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 88. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. Northeast wind 3 to 6 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. North wind 8 to 10 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. North northeast wind 5 to 8 mph.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. North northeast wind 11 to 13 mph, with gusts as high as 18 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Heat index values as high as 89. North northeast wind 14 to 16 mph, with gusts as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 72. North northeast wind 11 to 14 mph, with gusts as high as 23 mph.
Monday
A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 86. Heat index values as high as 90. North northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 71. North wind around 9 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 88. North northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 70. Northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 89. North wind 8 to 10 mph.
Wednesday Night
Mostly clear, with a low around 72. North northeast wind 5 to 8 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. North northeast wind 11 to 13 mph, with gusts as high as 18 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Lavaca TX
 28.62°N 96.64°W
Last Update:
7:56 am CDT Oct 4, 2026
Forecast Valid:
8am CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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