Bay of Isles - South Arm Weather Forecast

    • 21
    • 23

    Snow Showers

    • 24
    • 25

    Snow Showers

    • 14
    • 25

    Snow Showers

    • 12
    • 20

    Chance Snow

    • 12
    • 21

    Chance Snow

    • 12
    • 23

    Chance Snow

Today 13 Mar West Prince William Sound & Whittier

Mostly sunny in the morning then becoming partly cloudy. Highs in the 20s to lower 30s. Northwest wind 10 to 20 Mph with Gusts to 30 Mph.

Tonight 13 Mar West Prince William Sound & Whittier

Mostly cloudy with scattered snow Showers. Lows 18 to 28. Northwest wind 15 Mph with Gusts to 30 Mph.

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Bay of Isles - South Arm Temperature Statistics

March Temperature

Portage, Portage Glacier (47.8 miles)

  • Lowest 2 March, 2026

    -11.9 °F

  • Average March

    11.4 °F

  • Highest 6 March, 2026

    37 °F

Climate (2021–Present)

Portage, Portage Glacier (47.8 miles)

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  • Average Low 2021–2026

    32.4 °F

  • Average 2021–2026

    38.3 °F

  • Average High 2021–2026

    43.8 °F
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