Cottage Grove Lake Weather Forecast

    • 41
    • 61

    Decreasing Clouds

    • 41
    • 61

    Partly Sunny

    • 42
    • 63

    Partly Sunny

    • 46
    • 58

    Rain Likely

    • 45
    • 60

    Rain

    • 43
    • 55

    Rain

Today 11 Dec Lane County Cascade Foothills

Mostly sunny. A slight chance of rain Showers in the morning. Highs in the upper 50s. Winds light. Chance of rain 20 percent.

Tonight 11 Dec Lane County Cascade Foothills

Mostly clear. Lows in the lower 40s. Winds light.

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Cottage Grove Lake Temperature Statistics

December Temperature

Eugene, Mahlon Sweet Field (30.4 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    47.4 °F

  • Highest 8 December, 2025

    57.9 °F

Climate (2020–Present)

Eugene, Mahlon Sweet Field (30.4 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    66 °F
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