Granite Bay State Marine Park Weather Forecast

    • 52
    • 64

    Mostly Cloudy

    • 53
    • 64

    Partly Sunny

    • 53
    • 67

    Mostly Cloudy

    • 53
    • 63

    Chance Rain Showers

    • 53
    • 63

    Rain Showers Likely

    • 54
    • 64

    Rain Showers Likely

    • 54
    • 64

    Rain Showers Likely

Today 8 Aug West Prince William Sound & Whittier

Partly sunny. Areas of fog in the morning. Highs in the mid 50s to lower 60s. Variable wind 10 Mph in the morning becoming light.

Tonight 8 Aug West Prince William Sound & Whittier

Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. Lows in the lower 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

August Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 August, 2026

    46 °F

  • Average August

    56.2 °F

  • Highest 1 August, 2026

    73 °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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