Granite Bay State Marine Park Weather Forecast

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    Rain

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    Rain

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    Rain Likely

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    Rain Likely

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    Rain Showers Likely

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    Chance Rain Showers

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    Chance Rain Showers

Today 26 May West Prince William Sound & Whittier

Rain. Highs in the mid 40s. Southeast wind 10 to 25 Mph with Gusts to 35 Mph.

Tonight 26 May West Prince William Sound & Whittier

Numerous rain Showers in the Evening, then widespread rain Showers after midnight. Lows in the upper 30s. Southeast wind 10 to 20 Mph with Gusts to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

May Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 9 May, 2026

    32 °F

  • Average May

    41 °F

  • Highest 24 May, 2026

    55.9 °F

Climate (2021–Present)

Portage, Portage Glacier (25.5 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.1 °F

  • Average High 2021–2026

    43.6 °F
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