Granite Bay State Marine Park Weather Forecast

    • 52
    • 57

    Rain Showers

    • 50
    • 56

    Rain Showers

    • 49
    • 55

    Chance Rain

    • 47
    • 56

    Rain Showers Likely

    • 47
    • 60

    Slight Chance Rain Showers

    • 48
    • 60

    Partly Sunny

    • 48
    • 58

    Slight Chance Rain Showers

Today 26 Jun West Prince William Sound & Whittier

Scattered Showers in the Morning, then numerous Showers in the afternoon. Highs in the mid 50s. Variable wind 10 Mph in the morning becoming light.

Tonight 26 Jun West Prince William Sound & Whittier

Numerous Showers in the Evening, then scattered Showers after midnight. Lows in the lower 50s. Light Winds.

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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 16 June, 2026

    34 °F

  • Average June

    52 °F

  • Highest 4 June, 2026

    75.9 °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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