Granite Bay State Marine Park Weather Forecast

    • 32
    • 43

    Sunny

    • 37
    • 42

    Chance Rain

    • 39
    • 42

    Rain

    • 37
    • 43

    Rain

    • 36
    • 41

    Rain

    • 35
    • 40

    Rain/Snow

    • 37
    • 40

    Rain/Snow

Today 27 Oct West Prince William Sound & Whittier

Rain and snow. Lows in the upper 30s. Highs in the mid 40s.

Tonight 27 Oct West Prince William Sound & Whittier

Clear. Lows in the 30s to lower 40s. Light Winds becoming variable 10 Mph after midnight.

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  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

October Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 23 October, 2026

    19.9 °F

  • Average October

    39.6 °F

  • Highest 15 October, 2026

    50 °F

Climate (2021–2026)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.3 °F

  • Average High 2021–2026

    43.9 °F
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