Granite Bay State Marine Park Weather Forecast

    • 34
    • 39

    Rain/Snow Likely

    • 27
    • 35

    Chance Snow

    • 21
    • 28

    Snow Likely

    • 20
    • 28

    Snow Likely

    • 17
    • 24

    Chance Snow

    • 15
    • 21

    Chance Snow

Today 4 Dec West Prince William Sound & Whittier

Rain likely in the Morning, then a chance of rain in the afternoon. Highs in the upper 30s to mid 40s. Light Winds.

Tonight 4 Dec West Prince William Sound & Whittier

Rain and snow likely in the Evening, then a chance of rain and snow after midnight. Snow accumulation up to 1 inch. Lows in the 30s. Variable wind 10 Mph. Gusts to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

December Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 December, 2025

    32 °F

  • Average December

    34.4 °F

  • Highest 1 December, 2025

    39.9 °F

Climate (2020–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2020–2025

    33.5 °F

  • Average 2020–2025

    39.3 °F

  • Average High 2020–2025

    44.8 °F
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