Thurston Lake Weather Forecast

    • 51
    • 79

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

    • 50
    • 76

    Chance Rain

    • 48
    • 69

    Chance Rain

    • 47
    • 67

    Partly Sunny

    • 46
    • 70

    Partly Sunny

Today 5 Apr Southern Lake County

Mostly cloudy in the morning then becoming partly cloudy. Highs 73 to 83.

Tonight 5 Apr Southern Lake County

Mostly cloudy in the evening then becoming partly cloudy. Lows 46 to 56.

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Thurston Lake Temperature Statistics

April Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (30.4 miles)

  • Lowest 2 April, 2026

    37.9 °F

  • Average April

    54.3 °F

  • Highest 2 April, 2026

    66 °F

Climate (2021–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (30.4 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    72.8 °F
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