Clearlake Oaks Weather Forecast

    • 40
    • 66

    Increasing Clouds

    • 41
    • 66

    Mostly Cloudy

    • 38
    • 64

    Partly Sunny

    • 41
    • 67

    Mostly Sunny

    • 42
    • 70

    Mostly Sunny

    • 43
    • 71

    Mostly Sunny

Today 30 Jan Southern Lake County

Mostly cloudy then becoming partly cloudy in the late morning and early afternoon then becoming mostly cloudy. Highs 62 to 72.

Tonight 30 Jan Southern Lake County

Partly cloudy in the evening then becoming mostly cloudy. Lows 39 to 49.

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Clearlake Oaks Temperature Statistics

January Temperature

Ukiah Municipal Airport (29.2 miles)

  • Lowest 25 January, 2026

    28.7 °F

  • Average January

    49.8 °F

  • Highest 15 January, 2026

    70.6 °F

Climate (2021–Present)

Ukiah Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.1 °F
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