Island Lake Weather Forecast

    • 40
    • 51

    Increasing Clouds

    • 39
    • 47

    Decreasing Clouds

    • 43
    • 49

    Chance Rain

    • 43
    • 52

    Chance Rain

    • 42
    • 51

    Slight Chance Rain

    • 41
    • 50

    Chance Rain

    • 40
    • 51

    Slight Chance Rain

Today 22 Oct Cascades of Snohomish and Northern King Counties

Mostly sunny with a slight chance of rain and snow. Snow level near 4500 feet. Afternoon pass Temperatures in the mid 40s.

Tonight 22 Oct Cascades of Snohomish and Northern King Counties

Mostly cloudy then becoming partly cloudy after midnight then becoming mostly cloudy. Freezing level near 6500 feet decreasing to 5000 feet after midnight. Lows in the lower 30s. West wind in the Passes 10 to 15 Mph. Gusts to 30 Mph.

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  • Temperature Forecast NOAA

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Island Lake Temperature Statistics

October Temperature

Stampede Pass (53.4 miles)

  • Lowest 10 October, 2026

    33.1 °F

  • Average October

    46.8 °F

  • Highest 4 October, 2026

    70 °F

Climate (2021–2026)

Stampede Pass (53.4 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    41.6 °F

  • Average High 2021–2026

    48.3 °F
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