Swirl Island Weather Forecast

    • 52
    • 69

    Rain Showers

    • 51
    • 67

    Rain Showers

    • 51
    • 68

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 51
    • 69

    Chance Rain Showers

    • 50
    • 66

    Slight Chance Rain Showers

    • 51
    • 67

    Partly Sunny

Today 13 Sep San Juan County

Mostly cloudy in the morning then becoming mostly sunny. Areas of fog until late afternoon. Highs in the mid 60s to lower 70s. Light wind.

Tonight 13 Sep San Juan County

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain after midnight. Cloudy with a chance of rain late in the night. Lows in the 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swirl Island Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (9.3 miles)

  • Lowest 10 September, 2025

    50 °F

  • Average September

    56.5 °F

  • Highest 9 September, 2025

    64.9 °F

Climate (2020–Present)

Whidbey Island Naval Air Station - Ault Field (9.3 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    56.1 °F
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