Deception Pass State Park Weather Forecast

    • 52
    • 66

    Decreasing Clouds

    • 55
    • 67

    Mostly Cloudy

    • 52
    • 65

    Mostly Cloudy

    • 51
    • 63

    Mostly Cloudy

    • 51
    • 64

    Partly Sunny

    • 51
    • 66

    Partly Sunny

Today 8 Sep Island County

Partly sunny in the morning then becoming sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 8 Sep Island County

Partly cloudy. Lows in the lower to mid 50s. Light wind.

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Deception Pass State Park Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (3.7 miles)

  • Lowest 4 September, 2026

    48 °F

  • Average September

    58 °F

  • Highest 2 September, 2026

    68 °F

Climate (2021–2026)

Whidbey Island Naval Air Station - Ault Field (3.7 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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