Sonoma Mountain Weather Forecast

    • 58
    • 67

    Decreasing Clouds

    • 54
    • 68

    Mostly Sunny

    • 59
    • 73

    Sunny

    • 57
    • 76

    Mostly Sunny

    • 57
    • 72

    Mostly Sunny

    • 61
    • 76

    Mostly Sunny

Today 12 May North Bay Interior Valleys

Partly cloudy. Highs in the mid 60s to lower 80s. Southwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 12 May North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly clear. Lows in the 50s. West Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sonoma Mountain Temperature Statistics

May Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 4 May, 2026

    42.8 °F

  • Average May

    55.9 °F

  • Highest 10 May, 2026

    77 °F

Climate (2021–Present)

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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