Sonoma Mountain Weather Forecast

    • 55
    • 71

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

    • 56
    • 71

    Mostly Sunny

    • 56
    • 70

    Mostly Sunny

    • 60
    • 74

    Sunny

    • 60
    • 83

    Sunny

    • 57
    • 81

    Sunny

Today 5 Jul North Bay Interior Valleys

Sunny. Highs in the upper 60s to mid 80s. Southwest Winds 10 to 20 Mph.

Tonight 5 Jul North Bay Interior Valleys

Mostly clear. Lows in the upper 40s to mid 50s. Southwest Winds 10 to 20 Mph. Becoming south 5 to 10 Mph after midnight.

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Sonoma Mountain Temperature Statistics

July Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 3 July, 2025

    46.4 °F

  • Average July

    58.2 °F

  • Highest 2 July, 2025

    78.8 °F

Climate (2020–Present)

Petaluma Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    44.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    69.3 °F
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