Santa Rosa Weather Forecast

    • 44
    • 77

    Increasing Clouds

    • 43
    • 67

    Increasing Clouds

    • 47
    • 68

    Chance Rain

    • 46
    • 70

    Chance Rain

    • 44
    • 69

    Partly Sunny

    • 43
    • 72

    Mostly Sunny

    • 44
    • 72

    Chance Rain

Today 18 Oct North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain. Highs in the 60s to lower 70s.

Tonight 18 Oct North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the 40s to lower 50s. West Winds 10 to 20 Mph.

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Santa Rosa Temperature Statistics

October Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (6.8 miles)

  • Lowest 14 October, 2026

    37.7 °F

  • Average October

    66.9 °F

  • Highest 3 October, 2026

    102.7 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (6.8 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    73 °F
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