Lake Janus Weather Forecast

    • 57
    • 83

    Mostly Sunny

    • 58
    • 86

    Chance Rain Showers

    • 51
    • 71

    Chance Rain Showers

    • 49
    • 62

    Partly Sunny

    • 52
    • 75

    Mostly Sunny

    • 51
    • 74

    Partly Sunny

Today 20 Aug Cascades of Snohomish and Northern King Counties

Sunny. Freezing level near 14500 feet. Afternoon pass Temperatures in the mid 80s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 20 Aug Cascades of Snohomish and Northern King Counties

Mostly clear. Freezing level near 14500 feet. Lows in the upper 50s. West wind in the Passes around 10 Mph in the evening becoming light.

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Lake Janus Temperature Statistics

August Temperature

Stampede Pass (39.8 miles)

  • Lowest 3 August, 2026

    42.1 °F

  • Average August

    58.4 °F

  • Highest 5 August, 2026

    80.1 °F

Climate (2021–2026)

Stampede Pass (39.8 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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