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 Showers

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    Rain Showers

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    Rain Showers

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    Rain Showers

Today 13 Jul West Prince William Sound & Whittier

Rain likely in the Morning, then a chance of rain in the afternoon. Highs in the mid 50s. Variable wind 10 Mph. Gusts to 20 Mph in the afternoon.

Tonight 13 Jul West Prince William Sound & Whittier

A chance of rain in the Evening, then rain after midnight. Lows in the upper 40s. East wind 15 Mph.

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Granite Bay State Marine Park Temperature Statistics

July Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 July, 2026

    34 °F

  • Average July

    52.8 °F

  • Highest 6 July, 2026

    68 °F

Climate (2021–2026)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.1 °F

  • Average High 2021–2026

    43.7 °F
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