Northwest Island Weather Forecast

    • 46
    • 58

    Increasing Clouds

    • 45
    • 55

    Mostly Cloudy

    • 43
    • 54

    Partly Sunny

    • 44
    • 52

    Chance Rain

    • 44
    • 55

    Slight Chance Rain

    • 43
    • 55

    Partly Sunny

Today 21 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. Patchy fog in the morning. Highs in the upper 50s to mid 60s. Light wind.

Tonight 21 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy in the evening then becoming partly cloudy. Lows in the 40s. Light wind.

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Northwest Island Temperature Statistics

October Temperature

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

  • Lowest 11 October, 2026

    37.9 °F

  • Average October

    51.9 °F

  • Highest 5 October, 2026

    64.9 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    44.3 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    55.9 °F
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