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

68°F

20°C

Humidity 93%
Wind Speed Calm
Barometer 30.12 in (1019.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 21 Jan 11:53 pm CST
Extended Forecast for

Port Isabel TX

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 64. South southeast wind around 6 mph becoming light and variable.

    Low: 64 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Light and variable wind becoming east 5 to 9 mph in the morning.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. South southeast wind 6 to 8 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 74. South southeast wind 7 to 14 mph.

    High: 74 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 69. Southeast wind 11 to 14 mph.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 76. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy, with a south southeast wind 15 to 18 mph becoming north northwest in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 40%.

    Low: 47 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Breezy, with a north northwest wind 18 to 24 mph, with gusts as high as 30 mph.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 35. Breezy, with a north northwest wind around 22 mph, with gusts as high as 28 mph.

    Low: 35 °F

    Slight Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 64. South southeast wind around 6 mph becoming light and variable.
Thursday
Mostly sunny, with a high near 73. Light and variable wind becoming east 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 66. South southeast wind 6 to 8 mph.
Friday
Partly sunny, with a high near 74. South southeast wind 7 to 14 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 69. Southeast wind 11 to 14 mph.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 76. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy, with a south southeast wind 15 to 18 mph becoming north northwest in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Breezy, with a north northwest wind 18 to 24 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 35. Breezy, with a north northwest wind around 22 mph, with gusts as high as 28 mph.
Monday
Mostly cloudy, with a high near 53. Breezy, with a north northwest wind 15 to 21 mph.
Monday Night
Mostly cloudy, with a low around 46. North wind 9 to 14 mph.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 66.
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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:
12:18 am CST Jan 22, 2026
Forecast Valid:
12am CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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