Decatur Island - Davis Bay Weather Forecast

    • 34
    • 46

    Rain Likely

    • 34
    • 40

    Mostly Cloudy

    • 38
    • 42

    Mostly Cloudy

    • 39
    • 44

    Mostly Cloudy

    • 41
    • 44

    Chance Rain

    • 43
    • 46

    Chance Rain

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    • 48

    Chance Rain

Today 26 Dec San Juan County

Partly sunny with a slight chance of rain early in the Afternoon, then mostly cloudy with rain and snow likely late in the afternoon. No new snow accumulation. Highs in the 40s. West wind 10 to 20 Mph with Gusts to 30 Mph.

Tonight 26 Dec San Juan County

Mostly cloudy with a chance of rain Showers, snow and a slight chance of Thunderstorms in the Evening, then partly cloudy after midnight. Snow level near 1000 feet in the evening. Lows in the lower to mid 30s. Northwest wind 10 to 15 Mph with Gusts to 25 Mph.

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Decatur Island - Davis Bay Temperature Statistics

December Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    45.8 °F

  • Highest 15 December, 2025

    57 °F

Climate (2020–Present)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
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