Whidbey Island - Greenbank Weather Forecast

    • 50
    • 59

    Decreasing Clouds

    • 51
    • 59

    Mostly Cloudy

    • 51
    • 60

    Mostly Cloudy

    • 52
    • 62

    Partly Sunny

    • 53
    • 64

    Mostly Cloudy

    • 53
    • 64

    Partly Sunny

    • 53
    • 65

    Partly Sunny

Today 3 Sep Island County

Partly sunny. A chance of Showers through the day. A slight chance of Thunderstorms in the afternoon. Highs in the 60s. Southeast wind 10 to 20 Mph becoming south in the afternoon.

Tonight 3 Sep Island County

Mostly clear. Lows near 50. Light wind.

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Whidbey Island - Greenbank Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (17.4 miles)

  • Lowest 1 September, 2026

    51.1 °F

  • Average September

    58.3 °F

  • Highest 1 September, 2026

    64 °F

Climate (2021–2026)

Whidbey Island Naval Air Station - Ault Field (17.4 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    56 °F
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