Sonoma Mountain Weather Forecast

    • 57
    • 77

    Becoming Sunny

    • 58
    • 75

    Mostly Sunny

    • 59
    • 72

    Partly Sunny

    • 58
    • 67

    Partly Sunny

    • 57
    • 69

    Mostly Sunny

    • 56
    • 70

    Partly Sunny

Today 10 Aug North Bay Interior Valleys

Sunny. Highs in the 70s to 80s. South Winds 10 to 20 Mph.

Tonight 10 Aug North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Areas of fog after midnight. Lows in the 50s. Southwest Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Sonoma Mountain Temperature Statistics

August Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 1 August, 2026

    48.2 °F

  • Average August

    64.8 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Petaluma Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.5 °F
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