Bay of Isles - South Arm Weather Forecast

    • 18
    • 24

    Snow Showers

    • 24
    • 27

    Snow Showers Likely

    • 20
    • 29

    Snow Likely

    • 18
    • 28

    Slight Chance Snow

    • 17
    • 27

    Partly Sunny

    • 15
    • 25

    Mostly Sunny

Today 19 Mar West Prince William Sound & Whittier

Areas of blowing snow in the morning. Snow Showers likely. Snow accumulation 1 to 5 Inches. Highs in the 20s to lower 30s. North wind 25 to 40 Mph. Gusts to 60 Mph decreasing to 45 Mph in the afternoon.

Tonight 19 Mar West Prince William Sound & Whittier

Snow Showers likely. Snow accumulation 1 to 5 Inches. Lows 15 to 21. Southeast wind 15 Mph. Gusts to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bay of Isles - South Arm Temperature Statistics

March Temperature

Portage, Portage Glacier (47.8 miles)

  • Lowest 2 March, 2026

    -11.9 °F

  • Average March

    10.9 °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

    38.2 °F

  • Average High 2021–2026

    43.8 °F
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