Helena Lake Weather Forecast

    • 50
    • 65

    Mostly Cloudy

    • 44
    • 57

    Mostly Cloudy

    • 46
    • 54

    Mostly Cloudy

    • 45
    • 56

    Chance Rain

    • 43
    • 53

    Slight Chance Rain

    • 44
    • 58

    Partly Sunny

    • 46
    • 60

    Partly Sunny

Today 9 Sep Cascades of Snohomish and Northern King Counties

Sunny until late afternoon then becoming partly sunny. Freezing level near 14500 feet. Afternoon pass Temperatures around 70. Light wind.

Tonight 9 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy. Freezing level near 14500 feet. Lows in the upper 40s. Light wind.

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Helena Lake Temperature Statistics

September Temperature

Stampede Pass (59.7 miles)

  • Lowest 3 September, 2026

    39.9 °F

  • Average September

    47 °F

  • Highest 1 September, 2026

    61 °F

Climate (2021–2026)

Stampede Pass (59.7 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
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