Portland Island Weather Forecast

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    • 25

    Becoming Sunny

    • 17
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    Mostly Sunny

    • 26
    • 30

    Chance Snow

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    • 34

    Chance Snow

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    Rain/Snow Likely

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    Rain/Snow

Today 12 Mar City and Borough of Juneau

Partly cloudy. Highs in the mid 20s. Northeast Winds around 10 Mph.

Tonight 12 Mar City and Borough of Juneau

Mostly clear. Lows around 16. Light Winds. Near Downtown Juneau and Douglas, northeast Winds 10 to 15 Mph becoming around 10 Mph late.

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  • Temperature Forecast NOAA

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Portland Island Temperature Statistics

March Temperature

Juneau, Juneau International Airport (5.6 miles)

  • Lowest 2 March, 2026

    14 °F

  • Average March

    27.1 °F

  • Highest 6 March, 2026

    43 °F

Climate (2021–Present)

Juneau, Juneau International Airport (5.6 miles)

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  • Average Low 2021–2026

    37.4 °F

  • Average 2021–2026

    43.1 °F

  • Average High 2021–2026

    48.7 °F
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