Decatur Island - Davis Bay Weather Forecast

    • 45
    • 49

    Rain

    • 47
    • 49

    Rain

    • 49
    • 52

    Rain

    • 46
    • 53

    Slight Chance Rain

    • 43
    • 51

    Mostly Cloudy

    • 40
    • 48

    Partly Sunny

Today 10 Jan San Juan County

Cloudy. A slight chance of rain late in the morning. Rain likely early in the Afternoon, then a chance of rain late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs near 50. Southeast wind 10 to 20 Mph with Gusts to 30 Mph.

Tonight 10 Jan San Juan County

Breezy, rain. Rainfall Amounts a quarter to a half inch possible. Lows in the lower to mid 40s. Southeast wind 15 to 25 Mph.

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Decatur Island - Davis Bay Temperature Statistics

January Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 1 January, 2026

    36 °F

  • Average January

    43 °F

  • Highest 3 January, 2026

    51.1 °F

Climate (2021–Present)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.6 °F
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