Northwest Island Weather Forecast

    • 51
    • 65

    Decreasing Clouds

    • 53
    • 66

    Mostly Cloudy

    • 51
    • 64

    Mostly Cloudy

    • 50
    • 62

    Chance Rain

    • 50
    • 64

    Partly Sunny

    • 50
    • 65

    Partly Sunny

Today 8 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly 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 Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. Lows in the upper 40s to mid 50s. Light wind.

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  • Temperature Forecast NOAA

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Northwest Island Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (4.3 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 (4.3 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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