Clearlake Weather Forecast

    • 46
    • 83

    Increasing Clouds

    • 51
    • 83

    Mostly Sunny

    • 50
    • 80

    Mostly Sunny

    • 45
    • 78

    Partly Sunny

    • 50
    • 78

    Partly Sunny

    • 51
    • 82

    Partly Sunny

Today 22 Mar Southern Lake County

Mostly sunny. Highs 75 to 88.

Tonight 22 Mar Southern Lake County

Partly cloudy. Lows 47 to 57.

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Clearlake Temperature Statistics

March Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 6 March, 2026

    37 °F

  • Average March

    59.9 °F

  • Highest 20 March, 2026

    93 °F

Climate (2021–Present)

Ukiah Municipal Airport (32.9 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    60.9 °F

  • Average High 2021–2026

    76.3 °F
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