San Juan Island - Kanaka Bay Weather Forecast

    • 47
    • 65

    Mostly Sunny

    • 46
    • 64

    Increasing Clouds

    • 47
    • 60

    Chance Rain

    • 47
    • 62

    Chance Rain

    • 47
    • 62

    Rain Likely

    • 45
    • 60

    Rain Likely

    • 44
    • 59

    Chance Rain

Today 6 Oct San Juan County

Sunny. Highs in the 60s. Light wind.

Tonight 6 Oct San Juan County

Mostly clear. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Juan Island - Kanaka Bay Temperature Statistics

October Temperature

Friday Harbor Airport (3.1 miles)

  • Lowest 3 October, 2025

    46.9 °F

  • Average October

    54.9 °F

  • Highest 1 October, 2025

    64 °F

Climate (2020–Present)

Friday Harbor Airport (3.1 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    59.6 °F
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