Clearlake Weather Forecast

    • 58
    • 93

    Sunny

    • 59
    • 92

    Mostly Sunny

    • 60
    • 92

    Mostly Cloudy

    • 61
    • 94

    Mostly Sunny

    • 60
    • 94

    Mostly Sunny

    • 60
    • 94

    Mostly Sunny

Today 30 Sep Eastern Lake

Sunny. Highs 86 to 96. North wind up to 10 Mph.

Tonight 30 Sep Eastern Lake

Clear. Lows 57 to 67. West wind around 5 Mph shifting to the north overnight.

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Clearlake Temperature Statistics

September Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    69 °F

  • Highest 10 September, 2026

    100.7 °F

Climate (2021–2026)

Ukiah Municipal Airport (32.9 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    76 °F
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