Juneau Weather Forecast

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    Rain Showers

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    Rain Showers

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    Rain Showers

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    Rain Showers

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    Chance Rain Showers

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    Rain Showers Likely

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    Rain Showers Likely

Today 20 Sep City and Borough of Juneau

Rain Showers. Slight chance of Thunderstorms. Some Thunderstorms may produce gusty Winds and heavy rainfall. Highs in the lower 50s. Southeast Winds 15 to 25 Mph.

Tonight 20 Sep City and Borough of Juneau

Chance of rain Showers in the Evening, then rain Showers late. Lows in the mid 40s. Southeast Winds 10 to 20 Mph.

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Juneau Temperature Statistics

September Temperature

Juneau, Juneau International Airport (6.8 miles)

  • Lowest 12 September, 2026

    37 °F

  • Average September

    53.2 °F

  • Highest 3 September, 2026

    71.1 °F

Climate (2021–2026)

Juneau, Juneau International Airport (6.8 miles)

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  • Average Low 2021–2026

    37.1 °F

  • Average 2021–2026

    42.9 °F

  • Average High 2021–2026

    48.6 °F
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