Whidbey Island - Greenbank Weather Forecast

    • 52
    • 62

    Increasing Clouds

    • 51
    • 60

    Increasing Clouds

    • 52
    • 59

    Mostly Cloudy

    • 50
    • 58

    Rain Likely

    • 48
    • 59

    Chance Rain

    • 48
    • 59

    Mostly Cloudy

    • 50
    • 60

    Chance Rain

Today 21 Sep Island County

Mostly cloudy with a chance of rain. Highs in the lower to mid 60s.

Tonight 21 Sep Island County

Mostly clear in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. West wind 10 to 15 Mph.

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Whidbey Island - Greenbank Temperature Statistics

September Temperature

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

  • Lowest 18 September, 2026

    45 °F

  • Average September

    57 °F

  • Highest 7 September, 2026

    69.1 °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

    55.9 °F
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