Bay of Isles - South Arm Weather Forecast

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    Chance Rain

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    Chance Rain

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    Rain

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    Rain

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    Rain

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    Rain

Today 24 Aug West Prince William Sound & Whittier

Mostly cloudy with a slight chance of rain. Highs in the upper 50s. Light Winds.

Tonight 24 Aug West Prince William Sound & Whittier

Cloudy with a chance of rain. Lows in the lower 50s. Light Winds becoming variable 10 Mph after midnight.

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Bay of Isles - South Arm Temperature Statistics

August Temperature

Portage, Portage Glacier (47.8 miles)

  • Lowest 4 August, 2025

    39.7 °F

  • Average August

    54 °F

  • Highest 4 August, 2025

    68.6 °F

Climate (2020–Present)

Portage, Portage Glacier (47.8 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    39.2 °F

  • Average High 2020–2025

    44.8 °F
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