South Esther Island State Marine Park Weather Forecast

    • 50
    • 56

    Rain

    • 49
    • 61

    Mostly Sunny

    • 51
    • 61

    Chance Rain

    • 50
    • 55

    Rain Showers Likely

    • 51
    • 58

    Chance Rain Showers

    • 50
    • 61

    Chance Rain Showers

Today 25 Aug West Prince William Sound & Whittier

Rain. Highs in the mid 50s. Northeast wind 10 to 15 Mph.

Tonight 25 Aug West Prince William Sound & Whittier

Mostly cloudy with a chance of rain. Lows in the upper 40s. Variable wind 10 Mph. Gusts to 20 Mph in the evening.

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South Esther Island State Marine Park Temperature Statistics

August Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 8 August, 2026

    42.1 °F

  • Average August

    56 °F

  • Highest 14 August, 2026

    73.9 °F

Climate (2021–2026)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.1 °F

  • Average High 2021–2026

    43.7 °F
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