Portland Island Weather Forecast

    • 33
    • 38

    Sunny

    • 31
    • 37

    Sunny

    • 31
    • 37

    Partly Sunny

    • 30
    • 37

    Partly Sunny

    • 33
    • 37

    Rain/Snow Likely

    • 36
    • 39

    Rain

    • 40
    • 41

    Rain/Snow

Today 21 Jan City and Borough of Juneau

Mostly clear. Patchy freezing fog in the Morning, then patchy fog in the afternoon. Visibility one quarter mile or less at Times in the morning. Highs in the mid 30s. Light Winds. Near Downtown Juneau and Douglas, light Winds becoming northeast 10 to 15 Mph.

Tonight 21 Jan City and Borough of Juneau

Clear. Patchy fog early in the evening. Patchy freezing fog in the evening. Areas of freezing fog late. Visibility one quarter mile or less at Times in the evening. Lows 20 to 26. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Island Temperature Statistics

January Temperature

Juneau, Juneau International Airport (5.6 miles)

  • Lowest 2 January, 2026

    6.1 °F

  • Average January

    29.5 °F

  • Highest 13 January, 2026

    46 °F

Climate (2021–Present)

Juneau, Juneau International Airport (5.6 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    43.1 °F

  • Average High 2021–2026

    48.6 °F
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