Petaluma Weather Forecast

    • 55
    • 83

    Becoming Sunny

    • 55
    • 82

    Partly Sunny

    • 54
    • 83

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 54
    • 81

    Partly Sunny

    • 56
    • 84

    Partly Sunny

Today 31 Jul North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 70s to 80s. Southwest Winds 5 to 15 Mph.

Tonight 31 Jul North Bay Interior Valleys

Mostly clear except patchy fog after midnight. Lows in the 50s. West Winds 5 to 15 Mph.

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Petaluma Temperature Statistics

July Temperature

Petaluma Municipal Airport (2.5 miles)

  • Lowest 5 July, 2025

    42.8 °F

  • Average July

    59.2 °F

  • Highest 10 July, 2025

    87.8 °F

Climate (2020–Present)

Petaluma Municipal Airport (2.5 miles)

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  • Average Low 2020–2025

    44.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    69.2 °F
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