South Esther Island State Marine Park Weather Forecast

    • 54
    • 62

    Decreasing Clouds

    • 54
    • 66

    Mostly Sunny

    • 56
    • 66

    Partly Sunny

    • 55
    • 63

    Cloudy

    • 54
    • 63

    Chance Rain

    • 55
    • 65

    Chance Rain

    • 54
    • 64

    Chance Rain

Today 26 Jul West Prince William Sound & Whittier

Mostly cloudy with a chance of Showers. Highs in the upper 50s. Northwest wind 15 Mph.

Tonight 26 Jul West Prince William Sound & Whittier

Mostly cloudy in the evening then becoming mostly clear. Lows in the upper 40s to mid 50s. Variable wind 10 Mph in the evening becoming light.

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South Esther Island State Marine Park Temperature Statistics

July Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 4 July, 2025

    39.7 °F

  • Average July

    55.7 °F

  • Highest 21 July, 2025

    74.6 °F

Climate (2020–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    39.1 °F

  • Average High 2020–2025

    44.6 °F
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