Boulder Island Weather Forecast

    • 41
    • 48

    Chance Rain

    • 41
    • 47

    Chance Rain

    • 43
    • 47

    Rain

    • 44
    • 52

    Rain

    • 41
    • 50

    Rain

    • 42
    • 49

    Chance Rain

Today 21 Mar San Juan County

Sunny. Highs in the mid 40s to lower 50s. West wind to 10 Mph in the morning becoming light.

Tonight 21 Mar San Juan County

Mostly clear in the Evening, then mostly cloudy with a chance of rain after midnight. Lows near 40. Southwest wind around 10 Mph becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boulder Island Temperature Statistics

March Temperature

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

  • Lowest 1 March, 2026

    32 °F

  • Average March

    45.3 °F

  • Highest 18 March, 2026

    57.9 °F

Climate (2021–Present)

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    56.1 °F
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