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.

Overcast

77°F

25°C

Humidity 88%
Wind Speed SE 14 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Apr 9:53 pm CDT
Extended Forecast for

Port Isabel TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 74. South southeast wind around 17 mph, with gusts as high as 22 mph.

    Low: 74 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 80. Breezy, with a south southeast wind 15 to 18 mph, with gusts as high as 23 mph.

    High: 80 °F

    Mostly Cloudy
    and Breezy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. East wind 9 to 14 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Breezy, with a north northeast wind 18 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 74 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 70. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Breezy, with an east wind 13 to 18 mph. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72. East wind 10 to 16 mph.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. Southeast wind 9 to 17 mph.

    High: 78 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 72. Southeast wind 9 to 14 mph.

    Low: 72 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 74. South southeast wind around 17 mph, with gusts as high as 22 mph.
Saturday
Mostly cloudy, with a high near 80. Breezy, with a south southeast wind 15 to 18 mph, with gusts as high as 23 mph.
Saturday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. East wind 9 to 14 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Breezy, with a north northeast wind 18 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 70. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Breezy, with an east wind 13 to 18 mph. Chance of precipitation is 70%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72. East wind 10 to 16 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. Southeast wind 9 to 17 mph.
Tuesday Night
Mostly cloudy, with a low around 72. Southeast wind 9 to 14 mph.
Wednesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 79. Southeast wind 8 to 16 mph.
Wednesday Night
Partly cloudy, with a low around 74. Southeast wind around 14 mph.
Thursday
Mostly sunny, with a high near 80. Breezy.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Partly sunny, with a high near 81. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Isabel TX
 26.08°N 97.21°W
Last Update:
10:30 pm CDT Apr 17, 2026
Forecast Valid:
10pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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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