Granite Bay State Marine Park Weather Forecast

    • 22
    • 26

    Sunny

    • 21
    • 30

    Partly Sunny

    • 26
    • 35

    Snow Likely

    • 15
    • 33

    Chance Snow

    • 6
    • 21

    Chance Snow

    • 5
    • 15

    Mostly Cloudy

Today 21 Feb West Prince William Sound & Whittier

Sunny. Highs in the 20s. North wind 15 to 30 Mph. Gusts to 40 Mph decreasing to 30 Mph in the afternoon.

Tonight 21 Feb West Prince William Sound & Whittier

Clear. Lows 18 to 28. Northwest wind 10 to 20 Mph with Gusts to 30 Mph.

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  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

February Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 17 February, 2026

    10.9 °F

  • Average February

    30.8 °F

  • Highest 3 February, 2026

    45 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.7 °F

  • Average 2021–2026

    38.5 °F

  • Average High 2021–2026

    44.1 °F
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