Granite Bay State Marine Park Weather Forecast

    • 25
    • 29

    Snow

    • 13
    • 28

    Blustery

    • 9
    • 17

    Mostly Sunny

    • 14
    • 23

    Mostly Sunny

    • 20
    • 28

    Partly Sunny

    • 24
    • 32

    Mostly Cloudy

Today 18 Feb West Prince William Sound & Whittier

A chance of snow in the Morning, then snow likely in the afternoon. Snow accumulation up to 2 Inches. Highs in the lower 30s. Variable wind 10 Mph. Gusts to 20 Mph in the afternoon.

Tonight 18 Feb West Prince William Sound & Whittier

Mostly cloudy. A chance of snow and rain in the Evening, then a slight chance of snow after midnight. Lows in the mid 20s to lower 30s. North wind 10 to 25 Mph. Gusts to 35 Mph.

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Granite Bay State Marine Park Temperature Statistics

February Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 16 February, 2026

    14 °F

  • Average February

    32.6 °F

  • Highest 3 February, 2026

    45 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.7 °F

  • Average 2021–2026

    38.5 °F

  • Average High 2021–2026

    44.1 °F
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