Cottage Grove Lake Weather Forecast

    • 56
    • 83

    Increasing Clouds

    • 57
    • 81

    Mostly Cloudy

    • 50
    • 80

    Partly Sunny

    • 55
    • 85

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

    • 62
    • 96

    Sunny

    • 61
    • 99

    Hot

Today 5 Aug Lane County Cascade Foothills

Sunny. Highs in the lower 80s. Southwest wind 5 to 10 Mph.

Tonight 5 Aug Lane County Cascade Foothills

Partly cloudy this Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the mid 50s. Winds light. Chance of rain 20 percent.

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Cottage Grove Lake Temperature Statistics

August Temperature

Eugene, Mahlon Sweet Field (30.4 miles)

  • Lowest 3 August, 2025

    51.1 °F

  • Average August

    68.4 °F

  • Highest 1 August, 2025

    89.7 °F

Climate (2020–Present)

Eugene, Mahlon Sweet Field (30.4 miles)

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  • Average Low 2020–2025

    44 °F

  • Average 2020–2025

    54.3 °F

  • Average High 2020–2025

    65.9 °F
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