Clear Lake Weather Forecast

    • 54
    • 60

    Mostly Sunny

    • 57
    • 74

    Sunny

    • 52
    • 67

    Mostly Sunny

    • 53
    • 64

    Partly Sunny

    • 52
    • 66

    Partly Sunny

    • 52
    • 61

    Chance Rain

    • 50
    • 56

    Chance Rain

Today 15 Sep Cascades of Snohomish and Northern King Counties

Sunny. Freezing level near 13000 feet. Afternoon pass Temperatures in the mid 60s. Light wind.

Tonight 15 Sep Cascades of Snohomish and Northern King Counties

Clear. Areas of smoke late in the evening. Haze in the late evening and early morning. Freezing level near 14500 feet. Lows around 50. Light wind becoming east 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

September Temperature

Stampede Pass (54.1 miles)

  • Lowest 12 September, 2025

    48 °F

  • Average September

    60.6 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Stampede Pass (54.1 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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