Decatur Island - Davis Bay Weather Forecast

    • 48
    • 54

    Rain

    • 46
    • 54

    Rain

    • 46
    • 51

    Rain

    • 48
    • 53

    Rain

    • 45
    • 53

    Rain Likely

    • 43
    • 50

    Chance Rain

    • 43
    • 49

    Chance Rain

Today 12 Nov San Juan County

A chance of rain late in the Morning, then rain at Times early in the afternoon. Rain likely late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the 50s. Light wind.

Tonight 12 Nov San Juan County

Rain at Times. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid to upper 40s. East wind to 10 Mph becoming southeast around 10 Mph after midnight.

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Decatur Island - Davis Bay Temperature Statistics

November Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 4 November, 2025

    37 °F

  • Average November

    49 °F

  • Highest 5 November, 2025

    57 °F

Climate (2020–Present)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
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