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

Port Isabel, Port Isabel-Cameron County Airport (KPIL)

Lat: 26.16°NLon: 97.34°WElev: 16ft.

Fair

82°F

28°C

Humidity 79%
Wind Speed SE 7 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 20 Sep 9:53 pm CDT
Extended Forecast for

Port Isabel TX

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly clear, with a low around 81. Southeast wind 6 to 9 mph.

    Low: 81 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 4pm. Sunny, with a high near 87. East southeast wind 6 to 11 mph. Chance of precipitation is 60%.

    High: 87 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. East southeast wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 10am. Sunny, with a high near 88. Southeast wind 7 to 13 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 82. Southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 82 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Sunny, with a high near 89. South southeast wind 10 to 14 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. Southeast wind 10 to 13 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. South southeast wind 9 to 11 mph.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 80. Southeast wind around 9 mph. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly clear, with a low around 81. Southeast wind 6 to 9 mph.
Sunday
Showers and thunderstorms likely, mainly before 4pm. Sunny, with a high near 87. East southeast wind 6 to 11 mph. Chance of precipitation is 60%.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. East southeast wind 7 to 9 mph. Chance of precipitation is 30%.
Monday
A chance of showers, with thunderstorms also possible after 10am. Sunny, with a high near 88. Southeast wind 7 to 13 mph. Chance of precipitation is 30%.
Monday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 82. Southeast wind around 10 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Sunny, with a high near 89. South southeast wind 10 to 14 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. Southeast wind 10 to 13 mph. Chance of precipitation is 30%.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. South southeast wind 9 to 11 mph.
Wednesday Night
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 80. Southeast wind around 9 mph. Chance of precipitation is 40%.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. South southwest wind 7 to 11 mph becoming east northeast in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. East wind 6 to 8 mph becoming south after midnight.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Isabel TX
 26.08°N 97.21°W
Last Update:
10:30 pm CDT Sep 20, 2025
Forecast Valid:
10pm CDT Sep 20, 2025-6pm CDT Sep 27, 2025
 
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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