Port Isabel Weather Forecast

    • 64
    • 78

    Mostly Cloudy

    • 65
    • 74

    Decreasing Clouds

    • 67
    • 79

    Chance Thunderstorms

    • 67
    • 78

    Chance Thunderstorms

    • 66
    • 76

    Chance Rain Showers

    • 66
    • 74

    Mostly Cloudy

    • 66
    • 76

    Mostly Cloudy

Today 10 Dec Coastal Cameron

Sunny. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 10 Dec Coastal Cameron

Mostly cloudy. Patchy fog. Lows in the lower 60s. Southeast Winds around 5 Mph, becoming north after midnight.

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Port Isabel Temperature Statistics

December Temperature

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

  • Lowest 2 December, 2025

    48.9 °F

  • Average December

    59.8 °F

  • Highest 7 December, 2025

    78.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    68.5 °F

  • Average 2020–2025

    75.8 °F

  • Average High 2020–2025

    83.5 °F
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