Isolation Lake Weather Forecast

    • 21
    • 22

    Becoming Sunny

    • 25
    • 30

    Mostly Sunny

    • 27
    • 36

    Mostly Sunny

    • 27
    • 34

    Chance Snow Showers

    • 27
    • 29

    Partly Sunny

    • 25
    • 34

    Snow Showers

    • 23
    • 29

    Snow Showers Likely

Today 13 Oct Western Chelan County

Sunny. Highs in the upper 40s to upper 50s. East wind 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 13 Oct Western Chelan County

Mostly clear. Lows in the 30s.

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Isolation Lake Temperature Statistics

October Temperature

Stampede Pass (28 miles)

  • Lowest 11 October, 2025

    35.1 °F

  • Average October

    45 °F

  • Highest 6 October, 2025

    59 °F

Climate (2020–Present)

Stampede Pass (28 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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