Granite Bay State Marine Park Weather Forecast

    • 49
    • 66

    Mostly Sunny

    • 46
    • 63

    Sunny

    • 46
    • 59

    Mostly Cloudy

    • 46
    • 52

    Rain Showers

    • 44
    • 52

    Rain Showers Likely

    • 45
    • 54

    Chance Rain Showers

    • 45
    • 55

    Chance Rain Showers

Today 3 Jun West Prince William Sound & Whittier

Clear. Lows in the lower to mid 40s. Light Winds becoming variable 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

June Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 1 June, 2026

    45 °F

  • Average June

    45.7 °F

  • Highest 1 June, 2026

    46.9 °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

    43.7 °F
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