San Juan Island - Eagle Cove Weather Forecast

    • 42
    • 58

    Decreasing Clouds

    • 43
    • 54

    Mostly Cloudy

    • 42
    • 54

    Mostly Cloudy

    • 45
    • 54

    Mostly Sunny

    • 45
    • 54

    Mostly Cloudy

    • 44
    • 54

    Chance Rain

    • 43
    • 53

    Partly Sunny

Today 17 Oct San Juan County

Partly sunny. A slight chance of rain in the morning. Highs in the lower to mid 50s.

Tonight 17 Oct San Juan County

Mostly clear. Patchy fog late in the night. Lows in the 40s. West wind to 10 Mph in the evening becoming light.

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San Juan Island - Eagle Cove Temperature Statistics

October Temperature

Friday Harbor Airport (3.7 miles)

  • Lowest 12 October, 2026

    41 °F

  • Average October

    53.6 °F

  • Highest 2 October, 2026

    66 °F

Climate (2021–2026)

Friday Harbor Airport (3.7 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    59.7 °F
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