Clearlake Weather Forecast

    • 56
    • 91

    Increasing Clouds

    • 53
    • 84

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 53
    • 86

    Partly Sunny

    • 54
    • 86

    Partly Sunny

    • 54
    • 85

    Mostly Cloudy

Today 12 Aug Eastern Lake

Mostly sunny. Highs 85 to 95. East wind around 10 Mph shifting to the southeast in the afternoon.

Tonight 12 Aug Eastern Lake

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog overnight. Lows 52 to 62. Southwest wind up to 10 Mph.

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Clearlake Temperature Statistics

August Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 6 August, 2026

    55.7 °F

  • Average August

    81.2 °F

  • Highest 8 August, 2026

    108.6 °F

Climate (2021–2026)

Ukiah Municipal Airport (32.9 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    76.2 °F
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