Decatur Island - Davis Bay Weather Forecast

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    Rain

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    Rain

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    Rain

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    • 59

    Rain

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    Slight Chance Rain

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    Mostly Cloudy

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    Rain Likely

Today 4 Nov San Juan County

Partly sunny. Patchy fog in the morning. Highs in the 50s. Light wind becoming southeast around 10 Mph in the afternoon.

Tonight 4 Nov San Juan County

Rain at Times in the Evening, then mostly cloudy with a slight chance of rain after midnight. Partly cloudy late in the night. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the 40s. Southeast wind to 10 Mph becoming south after midnight.

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Decatur Island - Davis Bay Temperature Statistics

November Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 2 November, 2026

    37.9 °F

  • Average November

    44.4 °F

  • Highest 1 November, 2026

    51.1 °F

Climate (2021–2026)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    59.7 °F
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