Thurston Lake Weather Forecast

    • 36
    • 51

    Mostly Sunny

    • 38
    • 55

    Mostly Sunny

    • 39
    • 59

    Sunny

    • 40
    • 60

    Mostly Sunny

    • 43
    • 60

    Chance Rain

    • 43
    • 55

    Rain Likely

    • 41
    • 54

    Chance Rain

Today 27 Dec Southern Lake County

Sunny. Highs 50 to 60.

Tonight 27 Dec Southern Lake County

Clear. Lows 33 to 43. Highs 50 to 64.

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Thurston Lake Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    34 °F

  • Average December

    48.2 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    72.5 °F
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