Granite Bay State Marine Park Weather Forecast

    • 26
    • 27

    Snow Showers

    • 17
    • 28

    Chance Snow

    • 14
    • 21

    Mostly Cloudy

    • 14
    • 25

    Mostly Cloudy

    • 14
    • 24

    Mostly Cloudy

    • 15
    • 23

    Mostly Cloudy

Today 14 Mar West Prince William Sound & Whittier

Snow likely in the Morning, then scattered snow Showers in the afternoon. Snow accumulation up to 3 Inches. Highs in the mid 20s to lower 30s. North wind 10 to 20 Mph with Gusts to 30 Mph.

Tonight 14 Mar West Prince William Sound & Whittier

Scattered snow Showers in the Evening, then snow likely after midnight. Snow accumulation 1 to 4 Inches. Lows in the 20s to lower 30s. North wind 10 to 20 Mph with Gusts to 30 Mph.

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  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

March Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 2 March, 2026

    -11.9 °F

  • Average March

    10.4 °F

  • Highest 6 March, 2026

    37 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.4 °F

  • Average 2021–2026

    38.3 °F

  • Average High 2021–2026

    43.8 °F
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