Granite Bay State Marine Park Weather Forecast

    • 38
    • 41

    Rain

    • 35
    • 43

    Rain/Snow

    • 33
    • 42

    Rain

    • 35
    • 44

    Rain

    • 37
    • 42

    Rain

    • 38
    • 43

    Rain

Today 27 Apr West Prince William Sound & Whittier

Rain. Highs in the lower 40s. East wind 10 to 25 Mph with Gusts to 35 Mph.

Tonight 27 Apr West Prince William Sound & Whittier

Rain. Rain may be heavy at Times in the evening. Lows in the mid 30s. Southeast wind 15 to 30 Mph with Gusts to 40 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

    34.5 °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

    43.7 °F
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