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.

Light Rain Fog/Mist

76°F

24°C

Humidity 99%
Wind Speed N 16 mph
Barometer 29.96 in
Dewpoint 76°F (24°C)
Visibility 5.00 mi
Heat Index75°F (24°C)
Last update 4 Oct 8:55 am CDT
Extended Forecast for

Port O Connor TX

  • Today

    Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. Heat index values as high as 91. North northeast wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 75. North northeast wind around 15 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms between 2pm and 4pm, then a slight chance of showers after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 91. North northeast wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 87. North wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. North northeast wind 7 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. North northeast wind around 11 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Northeast wind 8 to 13 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. North northeast wind 13 to 15 mph, with gusts as high as 18 mph.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. Heat index values as high as 91. North northeast wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 75. North northeast wind around 15 mph, with gusts as high as 23 mph.
Monday
A slight chance of showers and thunderstorms between 2pm and 4pm, then a slight chance of showers after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 91. North northeast wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 87. North wind 10 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 75. North northeast wind 7 to 10 mph.
Wednesday
Sunny, with a high near 88. North northeast wind around 11 mph.
Wednesday Night
Mostly clear, with a low around 77. Northeast wind 8 to 13 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. North northeast wind 13 to 15 mph, with gusts as high as 18 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 75.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port O Connor TX
 28.44°N 96.43°W
Last Update:
7:56 am CDT Oct 4, 2026
Forecast Valid:
9am 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