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

Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Current conditions at

Port Lavaca - Calhoun County Airport (KPKV)

Lat: 28.65°NLon: 96.68°WElev: 27ft.

Fair

95°F

35°C

Humidity 61%
Wind Speed E 8 mph
Barometer 30.06 in
Dewpoint 80°F (27°C)
Visibility 10.00 mi
Heat Index114°F (46°C)
Last update 18 Jul 12:15 pm CDT
Extended Forecast for

Port O Connor TX

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 89. Heat index values as high as 102. South southeast wind 8 to 10 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 82. South southeast wind around 11 mph.

    Low: 82 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Heat index values as high as 103. South wind 10 to 14 mph.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 82. South southeast wind 11 to 13 mph, with gusts as high as 18 mph.

    Low: 82 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 18 mph.

    High: 90 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 82. South southeast wind 11 to 14 mph, with gusts as high as 18 mph.

    Low: 82 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89. South wind 11 to 14 mph.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 82. South southeast wind 11 to 13 mph.

    Low: 82 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. South wind 10 to 13 mph.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 89. Heat index values as high as 102. South southeast wind 8 to 10 mph.
Tonight
Partly cloudy, with a low around 82. South southeast wind around 11 mph.
Saturday
Mostly sunny, with a high near 89. Heat index values as high as 103. South wind 10 to 14 mph.
Saturday Night
Partly cloudy, with a low around 82. South southeast wind 11 to 13 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 82. South southeast wind 11 to 14 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 89. South wind 11 to 14 mph.
Monday Night
Partly cloudy, with a low around 82. South southeast wind 11 to 13 mph.
Tuesday
Mostly sunny, with a high near 90. South wind 10 to 13 mph.
Tuesday Night
Mostly clear, with a low around 82.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 82.
Thursday
Sunny, with a high near 90.
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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:
12:26 pm CDT Jul 18, 2025
Forecast Valid:
12pm CDT Jul 18, 2025-6pm CDT Jul 24, 2025
 
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