Whidbey Island - Greenbank Weather Forecast

    • 53
    • 61

    Rain Likely

    • 53
    • 60

    Mostly Cloudy

    • 53
    • 61

    Mostly Cloudy

    • 52
    • 62

    Mostly Sunny

    • 53
    • 66

    Mostly Sunny

    • 53
    • 68

    Mostly Sunny

    • 53
    • 70

    Mostly Sunny

Today 12 Sep Island County

Mostly cloudy. Highs in the 60s to lower 70s. Northwest wind to 10 Mph becoming west in the afternoon.

Tonight 12 Sep Island County

Mostly cloudy. A slight chance of rain in the Evening, then a chance of rain in the late evening and early morning. Rain likely late in the night. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 50s. West wind to 10 Mph becoming south after midnight.

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Whidbey Island - Greenbank Temperature Statistics

September Temperature

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

  • Lowest 6 September, 2026

    46.9 °F

  • Average September

    57.5 °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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