Granite Bay State Marine Park Weather Forecast

    • 34
    • 46

    Becoming Sunny

    • 32
    • 46

    Mostly Sunny

    • 34
    • 43

    Rain/Snow Likely

    • 34
    • 41

    Rain

    • 33
    • 42

    Rain/Snow

    • 33
    • 42

    Rain/Snow Likely

Today 13 Apr West Prince William Sound & Whittier

Mostly cloudy with a chance of snow in the Morning, then partly cloudy in the afternoon. Highs in the mid 40s. North wind 15 Mph shifting to the west in the afternoon.

Tonight 13 Apr West Prince William Sound & Whittier

Mostly clear. Lows in the 30s. Northwest wind 10 to 20 Mph.

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  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

April Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 April, 2026

    3 °F

  • Average April

    33.5 °F

  • Highest 9 April, 2026

    46 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.2 °F

  • Average High 2021–2026

    43.8 °F
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