Clearlake Weather Forecast

    • 39
    • 51

    Rain Showers

    • 35
    • 51

    Rain Showers

    • 32
    • 51

    Slight Chance Rain Showers

    • 34
    • 56

    Mostly Sunny

    • 36
    • 59

    Mostly Sunny

    • 37
    • 61

    Mostly Sunny

    • 37
    • 61

    Partly Sunny

Today 25 Dec Southern Lake County

Rain Showers and slight chance of Thunderstorms. Breezy. Some Thunderstorms may produce heavy rainfall. Highs 45 to 55. South wind 20 to 25 Mph with Gusts at higher Elevations to around 50 Mph.

Tonight 25 Dec Southern Lake County

Slight chance of Thunderstorms in the evening. Rain Showers through the night. Breezy. Some Thunderstorms may produce gusty Winds and heavy rainfall in the evening. Lows 36 to 46. South wind 20 to 25 Mph with Gusts at higher Elevations to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clearlake Temperature Statistics

December Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 13 December, 2025

    30 °F

  • Average December

    49.6 °F

  • Highest 10 December, 2025

    72 °F

Climate (2020–Present)

Ukiah Municipal Airport (32.9 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    60.8 °F

  • Average High 2020–2025

    76 °F
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