Decatur Island - Davis Bay Weather Forecast

    • 47
    • 52

    Rain Likely

    • 48
    • 54

    Mostly Cloudy

    • 45
    • 53

    Rain Likely

    • 42
    • 50

    Rain

    • 42
    • 49

    Slight Chance Thunderstorms

    • 43
    • 51

    Partly Sunny

Today 11 Apr San Juan County

A chance of rain in the Morning, then rain likely in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the lower to mid 50s. Light wind becoming south around 10 Mph in the afternoon.

Tonight 11 Apr San Juan County

Mostly cloudy. A chance of rain in the Evening, then a slight chance of rain after midnight. Lows in the 40s. Light wind.

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  • Temperature Real-Time

Decatur Island - Davis Bay Temperature Statistics

April Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 7 April, 2026

    37 °F

  • Average April

    48.5 °F

  • Highest 5 April, 2026

    62.1 °F

Climate (2021–Present)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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