Lake Sylvester Weather Forecast

    • 22
    • 33

    Blizzard

    • 24
    • 25

    Blizzard

    • 22
    • 28

    Snow

    • 20
    • 24

    Snow

    • 18
    • 24

    Snow

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    • 22

    Snow Likely

Today 16 Dec Western Chelan County

Rain and mountain snow. Mountain snow may be heavy at Times. Mountain snow accumulation up to 2 Inches Valleys and 7 to 15 Inches in the Mountains. Snow level 4000 Feet, rising to 5000 feet in the afternoon. Highs in the 40s. Chance of precipitation near 100 percent.

Tonight 16 Dec Western Chelan County

Mountain snow. Rain. Blowing mountain snow. Precipitation may be heavy at Times. Mountain snow accumulation up to 1 inch Valleys and 9 to 19 Inches in the Mountains. Snow level 5500 Feet, lowering to 4500 feet overnight. Lows in the upper 20s to upper 30s. Windy. Southwest wind 5 to 15 Mph, except southwest 20 to 30 Mph in the Mountains. Gusts up to 35 Mph increasing to 50 Mph overnight. Chance of precipitation near 100 percent.

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Lake Sylvester Temperature Statistics

December Temperature

Stampede Pass (31.1 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    36 °F

  • Highest 13 December, 2025

    51.1 °F

Climate (2020–Present)

Stampede Pass (31.1 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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