Granite Bay State Marine Park Weather Forecast

    • 40
    • 42

    Rain Showers

    • 39
    • 45

    Rain

    • 36
    • 42

    Rain

    • 35
    • 43

    Chance Rain

    • 34
    • 41

    Rain/Snow Likely

    • 35
    • 41

    Rain/Snow

Today 14 Oct West Prince William Sound & Whittier

Rain in the Morning, then rain Showers in the afternoon. Highs in the mid 40s. East wind 10 to 25 Mph. Gusts to 35 Mph.

Tonight 14 Oct West Prince William Sound & Whittier

Rain Showers. Lows in the lower 40s. East wind 15 to 30 Mph with Gusts to 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

October Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 2 October, 2026

    30.9 °F

  • Average October

    41.6 °F

  • Highest 9 October, 2026

    48.9 °F

Climate (2021–2026)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.3 °F

  • Average 2021–2026

    38.2 °F

  • Average High 2021–2026

    43.9 °F
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