Port Isabel Weather Forecast

    • 78
    • 85

    Thunderstorms Likely

    • 78
    • 88

    Rain Showers Likely

    • 79
    • 89

    Chance Thunderstorms

    • 79
    • 90

    Rain Showers Likely

    • 79
    • 90

    Rain Showers Likely

    • 80
    • 90

    Chance Thunderstorms

    • 80
    • 90

    Chance Rain Showers

Today 7 Sep Coastal Cameron

Showers likely with a chance of Thunderstorms this Morning, then Showers and Thunderstorms likely this afternoon. Highs around 90. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 7 Sep Coastal Cameron

Mostly cloudy. A chance of Showers and Thunderstorms this Evening, then Showers and Thunderstorms likely after midnight. Lows in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Real-Time

Port Isabel Temperature Statistics

September Temperature

Port Isabel, Port Isabel-Cameron County Airport (9.9 miles)

  • Lowest 4 September, 2025

    75.9 °F

  • Average September

    84.4 °F

  • Highest 5 September, 2025

    93.9 °F

Climate (2020–Present)

Port Isabel, Port Isabel-Cameron County Airport (9.9 miles)

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  • Average Low 2020–2025

    68.2 °F

  • Average 2020–2025

    75.6 °F

  • Average High 2020–2025

    83.3 °F
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