Granite Bay State Marine Park Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain Likely

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    Rain

Today 3 Oct West Prince William Sound & Whittier

Rain. Rain may be heavy at Times in the afternoon. Highs in the upper 40s. Northeast wind 15 to 30 Mph. Gusts to 55 Mph decreasing to 45 Mph in the afternoon.

Tonight 3 Oct West Prince William Sound & Whittier

Rain. Rain may be heavy at Times. Lows in the mid 40s. East wind 15 to 30 Mph. Gusts to 40 Mph decreasing to 30 Mph after midnight.

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  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

October Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 October, 2026

    33.1 °F

  • Average October

    36.2 °F

  • Highest 1 October, 2026

    39 °F

Climate (2021–2026)

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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