Cooper Lake Weather Forecast

    • 26
    • 36

    Partly Sunny

    • 28
    • 41

    Partly Sunny

    • 31
    • 41

    Rain/Snow Likely

    • 32
    • 40

    Rain/Snow

    • 30
    • 39

    Rain/Snow Likely

    • 29
    • 39

    Chance Rain/Snow

Today 30 Dec Upper Slopes of the Eastern Washington Cascades Crest

Mostly sunny. Highs in the lower to mid 30s.

Tonight 30 Dec Upper Slopes of the Eastern Washington Cascades Crest

Partly cloudy. Lows in the 20s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cooper Lake Temperature Statistics

December Temperature

Stampede Pass (12.4 miles)

  • Lowest 28 December, 2025

    19 °F

  • Average December

    32.8 °F

  • Highest 13 December, 2025

    51.1 °F

Climate (2020–Present)

Stampede Pass (12.4 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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