Port Isabel Weather Forecast

    • 79
    • 89

    Partly Sunny

    • 79
    • 90

    Increasing Clouds

    • 79
    • 90

    Partly Sunny

    • 79
    • 90

    Partly Sunny

    • 79
    • 90

    Partly Sunny

    • 79
    • 90

    Mostly Sunny

    • 78
    • 90

    Partly Sunny

Today 18 Jul Coastal Cameron

Mostly sunny. Highs in the lower 90s. Southeast Winds 10 to 15 Mph.

Tonight 18 Jul Coastal Cameron

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the upper 70s. Southeast Winds 10 to 15 Mph.

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Port Isabel Temperature Statistics

July Temperature

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

  • Lowest 9 July, 2025

    77.6 °F

  • Average July

    85.2 °F

  • Highest 8 July, 2025

    92.6 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    68.1 °F

  • Average 2020–2025

    75.4 °F

  • Average High 2020–2025

    83.1 °F
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