Port Alto Weather Forecast

    • 77
    • 89

    Mostly Sunny

    • 75
    • 88

    Mostly Sunny

    • 75
    • 87

    Mostly Sunny

    • 76
    • 87

    Chance Thunderstorms

    • 77
    • 86

    Chance Thunderstorms

    • 74
    • 86

    Chance Thunderstorms

Today 17 Sep Coastal Calhoun

Sunny. Highs around 90. Northeast Winds 5 to 10 Mph, increasing to southeast 10 to 15 Mph this afternoon.

Tonight 17 Sep Coastal Calhoun

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 70s. Southeast Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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Port Alto Temperature Statistics

September Temperature

Palacios Municipal Airport (10.6 miles)

  • Lowest 10 September, 2025

    66 °F

  • Average September

    82 °F

  • Highest 2 September, 2025

    93 °F

Climate (2020–Present)

Palacios Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    64.8 °F

  • Average 2020–2025

    72.4 °F

  • Average High 2020–2025

    80.3 °F
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