Decatur Island Weather Forecast

    • 42
    • 54

    Becoming Sunny

    • 45
    • 58

    Sunny

    • 47
    • 60

    Rain Likely

    • 46
    • 55

    Chance Rain

    • 45
    • 54

    Rain Likely

    • 45
    • 54

    Rain Likely

    • 44
    • 54

    Chance Rain

Today 1 May San Juan County

Mostly sunny. Highs in the 50s to lower 60s. Southwest wind to 10 Mph becoming south in the afternoon.

Tonight 1 May San Juan County

Partly cloudy. Lows in the lower to mid 40s. Southwest wind 10 to 15 Mph becoming northeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decatur Island Temperature Statistics

May Temperature

Friday Harbor Airport (9.3 miles)

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  • Average May

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Climate (2019–Present)

Friday Harbor Airport (9.3 miles)

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  • Average Low 2019–2024

    43.9 °F

  • Average 2019–2024

    50.9 °F

  • Average High 2019–2024

    58.5 °F
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