Granite Bay State Marine Park Weather Forecast

    • 16
    • 19

    Snow

    • 32
    • 34

    Snow

    • 27
    • 36

    Rain/Snow

    • 28
    • 32

    Rain/Snow

    • 29
    • 34

    Rain/Snow

    • 29
    • 36

    Rain/Snow

Today 8 Jan West Prince William Sound & Whittier

Partly sunny with a slight chance of snow. Highs 16 to 26. North wind 15 to 30 Mph. Gusts to 40 Mph in the morning.

Tonight 8 Jan West Prince William Sound & Whittier

A chance of snow in the Evening, then snow after midnight. Areas of blowing snow after midnight. Visibility one quarter mile or less at Times after midnight. Snow accumulation 1 to 3 Inches. Lows 12 to 24. Northeast wind 10 to 25 Mph. Gusts to 30 Mph increasing to 45 Mph after midnight.

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Granite Bay State Marine Park Temperature Statistics

January Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 January, 2026

    -2 °F

  • Average January

    12.4 °F

  • Highest 5 January, 2026

    24.1 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.9 °F

  • Average 2021–2026

    38.8 °F

  • Average High 2021–2026

    44.3 °F
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