Big Snow Lake Weather Forecast

    • 54
    • 68

    Breezy

    • 51
    • 70

    Mostly Sunny

    • 52
    • 67

    Partly Sunny

    • 49
    • 68

    Partly Sunny

    • 49
    • 61

    Chance Rain

    • 47
    • 54

    Chance Rain

Today 16 Sep Cascades of Southern King County

Sunny. Freezing level near 15500 feet. Afternoon pass Temperatures in the lower 70s. Southeast wind in the Passes 15 to 20 Mph with Gusts to 35 Mph.

Tonight 16 Sep Cascades of Southern King County

Clear. Freezing level near 15500 feet. Southeast wind in the Passes 10 to 15 Mph becoming east after midnight. Gusts to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Snow Lake Temperature Statistics

September Temperature

Stampede Pass (18 miles)

  • Lowest 14 September, 2025

    44.1 °F

  • Average September

    59.7 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Stampede Pass (18 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    48.3 °F
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