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

80°F

27°C

Humidity 90%
Wind Speed NE 15 mph
Barometer 29.97 in
Dewpoint 77°F (25°C)
Visibility 8.00 mi
Heat Index86°F (30°C)
Last update 4 Oct 1:15 pm CDT
Extended Forecast for

3 Miles SE Port Lavaca TX

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. Heat index values as high as 88. North northeast wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. North northeast wind 9 to 11 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 85. Heat index values as high as 93. North northeast wind 13 to 16 mph, with gusts as high as 23 mph.

    High: 85 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. North northeast wind 6 to 9 mph.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87. North northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Northeast wind 3 to 6 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. North wind around 9 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74. North northeast wind 5 to 9 mph.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. Heat index values as high as 88. North northeast wind around 14 mph, with gusts as high as 22 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 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. North northeast wind 9 to 11 mph, with gusts as high as 23 mph.
Monday
Partly sunny, with a high near 85. Heat index values as high as 93. North northeast wind 13 to 16 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 71. North northeast wind 6 to 9 mph.
Tuesday
Sunny, with a high near 87. North northeast wind around 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 71. Northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 88. North wind around 9 mph.
Wednesday Night
Partly cloudy, with a low around 74. North northeast wind 5 to 9 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Port Lavaca TX
 28.58°N 96.58°W
Last Update:
1:21 pm CDT Oct 4, 2026
Forecast Valid:
1pm CDT Oct 4, 2026-6pm CDT Oct 10, 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