San Juan Island - Kansas Cove Weather Forecast

    • 49
    • 69

    Chance Rain

    • 50
    • 69

    Increasing Clouds

    • 50
    • 70

    Mostly Cloudy

    • 50
    • 70

    Mostly Cloudy

    • 49
    • 69

    Slight Chance Rain

    • 48
    • 68

    Mostly Cloudy

    • 49
    • 68

    Chance Rain

Today 26 Jun San Juan County

Mostly cloudy with a chance of rain. Highs in the mid 60s to lower 70s. Southeast wind 10 to 15 Mph becoming southwest in the afternoon.

Tonight 26 Jun San Juan County

Mostly cloudy with a chance of rain in the Evening, then partly cloudy with a slight chance of rain after midnight. Lows in the upper 40s to mid 50s. Southwest wind to 10 Mph with Gusts to 20 Mph.

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San Juan Island - Kansas Cove Temperature Statistics

June Temperature

Friday Harbor Airport (1.9 miles)

  • Lowest 1 June, 2026

    44.1 °F

  • Average June

    59.6 °F

  • Highest 23 June, 2026

    86 °F

Climate (2021–2026)

Friday Harbor Airport (1.9 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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