Portland Island Weather Forecast

    • 55
    • 61

    Chance Rain Showers

    • 55
    • 64

    Slight Chance Rain Showers

    • 56
    • 67

    Mostly Cloudy

    • 56
    • 66

    Slight Chance Rain Showers

    • 56
    • 66

    Partly Sunny

    • 56
    • 67

    Chance Rain Showers

Today 8 Aug City and Borough of Juneau

Mostly cloudy. Chance of rain Showers. Highs in the lower 60s. Light Winds.

Tonight 8 Aug City and Borough of Juneau

Mostly cloudy. Slight chance of rain Showers. Lows in the lower 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Island Temperature Statistics

August Temperature

Juneau, Juneau International Airport (5.6 miles)

  • Lowest 1 August, 2026

    51.1 °F

  • Average August

    58.9 °F

  • Highest 1 August, 2026

    72 °F

Climate (2021–2026)

Juneau, Juneau International Airport (5.6 miles)

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  • Average Low 2021–2026

    37.1 °F

  • Average 2021–2026

    42.9 °F

  • Average High 2021–2026

    48.4 °F
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