Blind Island State Park Weather Forecast

    • 49
    • 77

    Chance Rain

    • 47
    • 68

    Chance Rain

    • 46
    • 65

    Chance Rain

    • 43
    • 61

    Chance Rain

    • 45
    • 63

    Partly Sunny

    • 47
    • 65

    Mostly Cloudy

Today 12 May San Juan County

Mostly sunny. Highs in the upper 60s to mid 70s. Light wind.

Tonight 12 May San Juan County

Mostly cloudy. A chance of rain after midnight. Lows near 50. Southwest wind to 10 Mph. Gusts to 20 Mph after midnight.

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  • Temperature Real-Time

Blind Island State Park Temperature Statistics

May Temperature

Friday Harbor Airport (5.6 miles)

  • Lowest 1 May, 2026

    45 °F

  • Average May

    56.3 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (5.6 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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