Decatur Island - Davis Bay Weather Forecast

    • 40
    • 49

    Mostly Cloudy

    • 38
    • 45

    Chance Rain

    • 38
    • 46

    Slight Chance Rain

    • 43
    • 48

    Mostly Cloudy

    • 42
    • 49

    Rain Likely

    • 43
    • 49

    Chance Rain

Today 28 Mar San Juan County

Partly sunny. Highs near 50. Light wind.

Tonight 28 Mar San Juan County

Mostly cloudy. Lows in the mid 30s to lower 40s. Light wind becoming west to 10 Mph after midnight.

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Decatur Island - Davis Bay Temperature Statistics

March Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 10 March, 2026

    30 °F

  • Average March

    44.8 °F

  • Highest 20 March, 2026

    59 °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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