Surprise Lake Weather Forecast

    • 33
    • 35

    Rain/Snow

    • 31
    • 35

    Chance Snow Showers

    • 35
    • 45

    Partly Sunny

    • 36
    • 45

    Rain Likely

    • 36
    • 41

    Rain

    • 32
    • 37

    Snow

Today 19 Oct Cascades of Snohomish and Northern King Counties

Showers through the day. A slight chance of Thunderstorms in the afternoon. Snow level near 5000 feet. Rainfall Amounts one to three Inches Possible, except higher Amounts possible in Thunderstorms. Snow accumulation up to 4 Inches. Afternoon pass Temperatures in the upper 30s. Southwest wind in the Passes around 15 Mph becoming west in the afternoon.

Tonight 19 Oct Cascades of Snohomish and Northern King Counties

Showers in the Evening, then Showers likely after midnight. A chance of Showers in the morning. Snow level near 5000 feet. Rainfall Amounts a half inch to one inch possible. Snow accumulation up to 2 Inches. Total snow accumulation up to 6 Inches. Lows in the mid 30s. West wind in the Passes 10 to 15 Mph. Gusts to 25 Mph after midnight.

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Surprise Lake Temperature Statistics

October Temperature

Stampede Pass (28.6 miles)

  • Lowest 14 October, 2025

    28 °F

  • Average October

    42 °F

  • Highest 6 October, 2025

    59 °F

Climate (2020–Present)

Stampede Pass (28.6 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    41.5 °F

  • Average High 2020–2025

    48.3 °F
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