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.

Partly Cloudy

78°F

26°C

Humidity 85%
Wind Speed Calm
Barometer 29.94 in (1013.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 4 Oct 2:53 am CDT
Extended Forecast for

Port Isabel TX

  • Overnight

    Overnight: A slight chance of showers, with thunderstorms also possible after 4am. Mostly clear, with a low around 78. Northeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 2pm. Sunny, with a high near 87. North northeast wind 7 to 14 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Northeast wind 5 to 10 mph becoming light after midnight.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Light and variable wind becoming northeast 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. East wind 6 to 8 mph becoming south southeast after midnight.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. Light and variable wind becoming east 5 to 10 mph in the morning.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 78. Southeast wind 6 to 10 mph.

    Low: 78 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind 5 to 13 mph.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. East wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers, with thunderstorms also possible after 4am. Mostly clear, with a low around 78. Northeast wind around 7 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms before 2pm. Sunny, with a high near 87. North northeast wind 7 to 14 mph.
Saturday Night
Mostly clear, with a low around 76. Northeast wind 5 to 10 mph becoming light after midnight.
Sunday
Sunny, with a high near 88. Light and variable wind becoming northeast 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 77. East wind 6 to 8 mph becoming south southeast after midnight.
Monday
Sunny, with a high near 90. Light and variable wind becoming east 5 to 10 mph in the morning.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 78. Southeast wind 6 to 10 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind 5 to 13 mph.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. East wind 7 to 10 mph. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Northeast wind 7 to 15 mph. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers. Partly cloudy, with a low around 78. Northeast wind 9 to 13 mph.
Thursday
Showers and thunderstorms likely. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Isabel TX
 26.06°N 97.21°W
Last Update:
3:30 am CDT Oct 4, 2025
Forecast Valid:
3am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation