Port Isabel Weather Forecast

    • 53
    • 71

    Slight Chance Rain Showers

    • 50
    • 64

    Mostly Cloudy

    • 47
    • 59

    Partly Sunny

    • 54
    • 63

    Mostly Cloudy

    • 62
    • 69

    Mostly Cloudy

    • 62
    • 73

    Mostly Cloudy

Today 29 Jan Coastal Cameron

Mostly sunny in the Morning, then becoming mostly cloudy. Highs in the lower 70s. Southeast Winds 5 to 10 Mph.

Tonight 29 Jan Coastal Cameron

Mostly cloudy. Lows in the lower 50s. East Winds around 5 Mph, increasing to north 10 to 15 Mph with Gusts up to 20 Mph after midnight.

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Port Isabel Temperature Statistics

January Temperature

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

  • Lowest 26 January, 2026

    28.9 °F

  • Average January

    63.7 °F

  • Highest 3 January, 2026

    87.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    68.5 °F

  • Average 2021–2026

    75.9 °F

  • Average High 2021–2026

    83.5 °F
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