Lost Lake Weather Forecast

    • 37
    • 45

    Mostly Cloudy

    • 39
    • 50

    Mostly Sunny

    • 41
    • 55

    Mostly Sunny

    • 31
    • 48

    Partly Sunny

    • 30
    • 34

    Partly Sunny

    • 31
    • 35

    Chance Rain/Snow

    • 32
    • 36

    Chance Rain/Snow

Today 19 Oct Western Chelan County

Mostly sunny. Highs in the 50s.

Tonight 19 Oct Western Chelan County

Mostly cloudy. Lows in the upper 30s to upper 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

October Temperature

Stampede Pass (41.6 miles)

  • Lowest 10 October, 2026

    33.1 °F

  • Average October

    47.8 °F

  • Highest 4 October, 2026

    70 °F

Climate (2021–2026)

Stampede Pass (41.6 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    41.6 °F

  • Average High 2021–2026

    48.3 °F
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