Granite Bay State Marine Park Weather Forecast

    • 50
    • 53

    Rain

    • 48
    • 59

    Mostly Sunny

    • 49
    • 59

    Chance Rain

    • 47
    • 56

    Rain Showers Likely

    • 49
    • 58

    Rain Showers Likely

    • 50
    • 58

    Rain Showers Likely

Today 28 Aug West Prince William Sound & Whittier

Rain. Rain may be heavy at Times. Highs in the lower 50s. Northeast wind 10 to 15 Mph with Gusts to 25 Mph.

Tonight 28 Aug West Prince William Sound & Whittier

Mostly cloudy. A chance of rain in the Evening, then a slight chance of Showers after midnight. Lows in the upper 40s. Northwest wind 15 Mph. Gusts to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Bay State Marine Park Temperature Statistics

August Temperature

Portage, Portage Glacier (25.5 miles)

  • Lowest 24 August, 2026

    39 °F

  • Average August

    55.6 °F

  • Highest 14 August, 2026

    73.9 °F

Climate (2021–2026)

Portage, Portage Glacier (25.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    38.1 °F

  • Average High 2021–2026

    43.7 °F
Get WillyWeather+ to remove ads