Spieden Island Weather Forecast

    • 52
    • 61

    Increasing Clouds

    • 52
    • 65

    Chance Rain

    • 50
    • 62

    Chance Rain

    • 49
    • 60

    Chance Rain

    • 47
    • 57

    Chance Rain

    • 48
    • 58

    Mostly Cloudy

    • 50
    • 59

    Partly Sunny

Today 11 May San Juan County

Mostly sunny. Highs in the 60s. Light wind becoming north to 10 Mph in the afternoon.

Tonight 11 May San Juan County

Partly cloudy. Lows near 50. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Spieden Island Temperature Statistics

May Temperature

Friday Harbor Airport (9.3 miles)

  • Lowest 1 May, 2026

    45 °F

  • Average May

    56.4 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (9.3 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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