Granite Bay State Marine Park Weather Forecast

    • 22
    • 32

    Snow Likely

    • 16
    • 25

    Snow Likely

    • 29
    • 32

    Rain/Snow

    • 29
    • 35

    Rain/Snow

    • 24
    • 33

    Snow Likely

    • 20
    • 29

    Chance Snow

Today 27 Dec West Prince William Sound & Whittier

Snow. Snow accumulation up to 4 Inches. Highs in the upper 20s to mid 30s. North wind 15 to 30 Mph with Gusts to 45 Mph.

Tonight 27 Dec West Prince William Sound & Whittier

Mostly cloudy with a slight chance of snow. Lows 17 to 25. Northwest wind 10 to 25 Mph with Gusts to 40 Mph.

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Granite Bay State Marine Park Temperature Statistics

December Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 22 December, 2025

    -11.9 °F

  • Average December

    11.3 °F

  • Highest 2 December, 2025

    41 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2025

    33.1 °F

  • Average 2021–2025

    38.9 °F

  • Average High 2021–2025

    44.4 °F
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