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

69°F

21°C

Humidity 93%
Wind Speed SE 3 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 30 Nov 5:53 am CST
Extended Forecast for

Port Isabel TX

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. Temperature falling to around 67 by 5pm. Breezy, with a south wind 8 to 13 mph becoming north 16 to 21 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F⇓

    Showers and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Breezy, with a northwest wind 18 to 21 mph. Chance of precipitation is 70%.

    Low: 55 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 62. Northwest wind 11 to 17 mph.

    High: 62 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers, mainly after midnight. Cloudy, with a low around 61. North northwest wind 10 to 17 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before noon. Cloudy, with a high near 67. Breezy, with a north wind 14 to 20 mph.

    High: 67 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Cloudy, with a low around 63. North wind 8 to 13 mph becoming east after midnight.

    Low: 63 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers after noon. Mostly cloudy, with a high near 78. East wind 8 to 13 mph becoming south in the morning.

    High: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 72. South southeast wind around 10 mph.

    Low: 72 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 78. South wind 9 to 14 mph becoming northwest in the afternoon. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. Temperature falling to around 67 by 5pm. Breezy, with a south wind 8 to 13 mph becoming north 16 to 21 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Breezy, with a northwest wind 18 to 21 mph. Chance of precipitation is 70%.
Monday
A 50 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 62. Northwest wind 11 to 17 mph.
Monday Night
A 40 percent chance of showers, mainly after midnight. Cloudy, with a low around 61. North northwest wind 10 to 17 mph, with gusts as high as 22 mph.
Tuesday
A 30 percent chance of showers, mainly before noon. Cloudy, with a high near 67. Breezy, with a north wind 14 to 20 mph.
Tuesday Night
A 20 percent chance of showers. Cloudy, with a low around 63. North wind 8 to 13 mph becoming east after midnight.
Wednesday
A 30 percent chance of showers after noon. Mostly cloudy, with a high near 78. East wind 8 to 13 mph becoming south in the morning.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 72. South southeast wind around 10 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 78. South wind 9 to 14 mph becoming northwest in the afternoon. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind around 14 mph. Chance of precipitation is 50%.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 71. Northwest wind 13 to 15 mph.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 75.
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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:
6:45 am CST Nov 30, 2025
Forecast Valid:
6am CST Nov 30, 2025-6pm CST Dec 6, 2025
 
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