Theseus Lake Weather Forecast

    • 34
    • 55

    Rain Showers

    • 34
    • 43

    Snow

    • 30
    • 39

    Snow Showers

    • 26
    • 39

    Snow Showers Likely

    • 31
    • 42

    Snow Showers Likely

    • 27
    • 37

    Snow Showers

Today 26 Mar Western Chelan County

Partly sunny. Patchy dense fog in the morning. A chance of rain Showers in the afternoon. Highs in the upper 50s to mid 60s. Chance of precipitation 20 percent.

Tonight 26 Mar Western Chelan County

Rain Showers. A chance of Thunderstorms in the Evening, then high mountain snow Showers overnight. Some Thunderstorms may produce damaging Winds in the evening. High mountain snow accumulation up to 1 inch. Snow level 6500 feet overnight. Lows in the upper 30s to lower 40s. Chance of precipitation near 100 percent.

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Theseus Lake Temperature Statistics

March Temperature

Stampede Pass (41.6 miles)

  • Lowest 14 March, 2025

    21 °F

  • Average March

    32 °F

  • Highest 1 March, 2025

    48 °F

Climate (2020–Present)

Stampede Pass (41.6 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    41.4 °F

  • Average High 2020–2025

    48.3 °F
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