Decision Point State Marine Park Weather Forecast

    • 9
    • 15

    Blustery

    • 8
    • 11

    Blustery

    • 12
    • 15

    Blustery

    • 6
    • 15

    Mostly Sunny

    • 7
    • 11

    Partly Sunny

    • 10
    • 15

    Partly Sunny

Today 17 Dec West Prince William Sound & Whittier

Sunny. Highs 15 to 25. Northwest wind 10 to 20 Mph with Gusts to 35 Mph.

Tonight 17 Dec West Prince William Sound & Whittier

Clear. Lows 8 to 18 above. Northwest wind 10 to 25 Mph. Gusts to 30 Mph increasing to 40 Mph after midnight.

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Decision Point State Marine Park Temperature Statistics

December Temperature

Portage, Portage Glacier (12.4 miles)

  • Lowest 11 December, 2025

    -6 °F

  • Average December

    17.5 °F

  • Highest 2 December, 2025

    41 °F

Climate (2021–Present)

Portage, Portage Glacier (12.4 miles)

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  • Average Low 2021–2025

    33.3 °F

  • Average 2021–2025

    39.1 °F

  • Average High 2021–2025

    44.7 °F
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