Clearlake Weather Forecast

    • 41
    • 55

    Rain

    • 37
    • 55

    Chance Rain

    • 40
    • 62

    Mostly Sunny

    • 40
    • 65

    Mostly Sunny

    • 41
    • 65

    Mostly Sunny

    • 40
    • 64

    Partly Sunny

    • 41
    • 63

    Partly Sunny

Today 19 Nov Southern Lake County

Mostly cloudy. Patchy valley fog in the morning. Slight chance of rain in the afternoon. Highs 48 to 58.

Tonight 19 Nov Southern Lake County

Cloudy. Chance of rain. Lows 37 to 47.

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Clearlake Temperature Statistics

November Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 15 November, 2025

    42.1 °F

  • Average November

    56.7 °F

  • Highest 2 November, 2025

    79 °F

Climate (2020–Present)

Ukiah Municipal Airport (32.9 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76 °F
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