Boulder Island Weather Forecast

    • 50
    • 56

    Rain

    • 48
    • 56

    Rain

    • 47
    • 56

    Rain Likely

    • 49
    • 56

    Chance Rain

    • 48
    • 57

    Slight Chance Rain

    • 49
    • 57

    Mostly Cloudy

Today 16 May San Juan County

Cloudy. A chance of rain in the morning. Rain likely in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid 50s to lower 60s. Southeast wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 16 May San Juan County

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boulder Island Temperature Statistics

May Temperature

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

  • Lowest 1 May, 2025

    37.9 °F

  • Average May

    51.9 °F

  • Highest 6 May, 2025

    64 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    50.2 °F

  • Average High 2020–2025

    56.3 °F
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