Aetna Springs Weather Forecast

    • 63
    • 91

    Sunny

    • 64
    • 93

    Mostly Sunny

    • 59
    • 87

    Partly Sunny

    • 59
    • 79

    Partly Sunny

    • 60
    • 83

    Mostly Sunny

    • 64
    • 89

    Sunny

    • 63
    • 90

    Sunny

Today 16 Sep North Bay Interior Mountains

Sunny. Highs in the 80s to lower 90s. South Winds around 5 Mph.

Tonight 16 Sep North Bay Interior Mountains

Clear. Lows in the upper 60s. West Winds around 5 Mph in the evening. Becoming light.

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Aetna Springs Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

  • Lowest 14 September, 2025

    48 °F

  • Average September

    65.3 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.8 °F
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