Big Heart Lake Weather Forecast

    • 38
    • 45

    Chance Rain

    • 43
    • 58

    Sunny

    • 43
    • 60

    Sunny

    • 43
    • 58

    Mostly Sunny

    • 45
    • 60

    Mostly Sunny

    • 44
    • 61

    Partly Sunny

Today 15 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy with a slight chance of Showers. Snow level near 8000 feet. Afternoon pass Temperatures in the lower 50s. Light wind.

Tonight 15 Sep Cascades of Snohomish and Northern King Counties

Partly cloudy with a slight chance of Showers in the Evening, then mostly clear after midnight. Snow level near 8500 feet. Lows in the lower 40s. Light wind.

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Big Heart Lake Temperature Statistics

September Temperature

Stampede Pass (20.5 miles)

  • Lowest 3 September, 2026

    39.9 °F

  • Average September

    51.2 °F

  • Highest 9 September, 2026

    71.1 °F

Climate (2021–2026)

Stampede Pass (20.5 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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