Portland Island Weather Forecast

    • 56
    • 67

    Increasing Clouds

    • 56
    • 65

    Mostly Cloudy

    • 55
    • 59

    Rain Showers Likely

    • 54
    • 60

    Rain Showers Likely

    • 53
    • 61

    Chance Rain

    • 53
    • 62

    Rain Likely

    • 53
    • 62

    Rain Likely

Today 21 Jul City and Borough of Juneau

Decreasing Clouds. Highs 67 to 73. Northwest Winds around 10 Mph shifting to the west in the afternoon.

Tonight 21 Jul City and Borough of Juneau

Partly cloudy. Lows in the mid 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Island Temperature Statistics

July Temperature

Juneau, Juneau International Airport (5.6 miles)

  • Lowest 13 July, 2025

    44.7 °F

  • Average July

    56.7 °F

  • Highest 14 July, 2025

    74.6 °F

Climate (2020–Present)

Juneau, Juneau International Airport (5.6 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    43.2 °F

  • Average High 2020–2025

    48.7 °F
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