Bay of Isles - South Arm Weather Forecast

    • 49
    • 59

    Increasing Clouds

    • 50
    • 58

    Chance Rain

    • 47
    • 53

    Rain Showers

    • 46
    • 55

    Mostly Cloudy

    • 45
    • 54

    Chance Rain Showers

    • 48
    • 57

    Partly Sunny

Today 25 Jun West Prince William Sound & Whittier

Partly cloudy. Highs in the mid 50s to lower 60s. West wind 10 to 20 Mph.

Tonight 25 Jun West Prince William Sound & Whittier

Mostly clear in the Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the upper 40s. West wind 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bay of Isles - South Arm Temperature Statistics

June Temperature

Portage, Portage Glacier (47.8 miles)

  • Lowest 16 June, 2026

    34 °F

  • Average June

    52.1 °F

  • Highest 4 June, 2026

    75.9 °F

Climate (2021–2026)

Portage, Portage Glacier (47.8 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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