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

Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fog/Mist

70°F

21°C

Humidity 90%
Wind Speed E 7 mph
Barometer 30.00 in
Dewpoint 67°F (19°C)
Visibility 6.00 mi
Last update 15 Nov 12:35 pm CST
Extended Forecast for

Port O Connor TX

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 72. East northeast wind 9 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph.

    Low: 57 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 8am and 10am. Partly sunny, with a high near 64. North northeast wind 17 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. North northeast wind 14 to 18 mph, with gusts as high as 25 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 67. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. East northeast wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73. East northeast wind 11 to 15 mph, with gusts as high as 22 mph.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 69. East northeast wind 10 to 16 mph, with gusts as high as 21 mph.

    Low: 69 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers. Partly sunny, with a high near 74. East wind 11 to 16 mph, with gusts as high as 21 mph.

    High: 74 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 72. East northeast wind 9 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph.
Monday
A slight chance of showers between 8am and 10am. Partly sunny, with a high near 64. North northeast wind 17 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 55. North northeast wind 14 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 67. East northeast wind around 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 62. East northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 73. East northeast wind 11 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 69. East northeast wind 10 to 16 mph, with gusts as high as 21 mph.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 74. East wind 11 to 16 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 69.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port O Connor TX
 28.44°N 96.43°W
Last Update:
12:46 pm CST Nov 15, 2026
Forecast Valid:
12pm CST Nov 15, 2026-6pm CST Nov 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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