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

84°F

29°C

Humidity 80%
Wind Speed SE 9 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 30 Aug 8:53 pm CDT
Extended Forecast for

Port Isabel TX

  • Tonight

    Tonight: Mostly clear, with a low around 80. Southeast wind 7 to 10 mph.

    Low: 80 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. South wind 6 to 11 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 81. East southeast wind 5 to 10 mph.

    Low: 81 °F

    Mostly Clear

  • Labor Day

    Labor Day: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 91. Light and variable wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. East wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Northwest wind 5 to 11 mph becoming northeast in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Northeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Northwest wind 6 to 11 mph becoming northeast in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. East wind 5 to 9 mph becoming light and variable after midnight.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 80. Southeast wind 7 to 10 mph.
Sunday
Sunny, with a high near 92. South wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 81. East southeast wind 5 to 10 mph.
Labor Day
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 91. Light and variable wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 30%.
Monday Night
A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. East wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Northwest wind 5 to 11 mph becoming northeast in the afternoon.
Tuesday Night
A slight chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Northeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 91. Northwest wind 6 to 11 mph becoming northeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 78. East wind 5 to 9 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 91. Light and variable wind becoming east 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 79. South southeast wind 6 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 80.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Isabel TX
 26.06°N 97.21°W
Last Update:
9:30 pm CDT Aug 30, 2025
Forecast Valid:
9pm CDT Aug 30, 2025-6pm CDT Sep 6, 2025
 
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Additional Resources

Radar & Satellite Image

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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