Petaluma Weather Forecast

    • 52
    • 92

    Sunny

    • 52
    • 90

    Increasing Clouds

    • 50
    • 86

    Mostly Sunny

    • 49
    • 85

    Mostly Sunny

    • 49
    • 75

    Partly Sunny

    • 48
    • 71

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 18 May North Bay Interior Valleys

Sunny. Highs in the upper 70s to lower 90s. North Winds 5 to 15 Mph.

Tonight 18 May North Bay Interior Valleys

Clear. Lows in the 50s to lower 60s. Northwest Winds 5 to 15 Mph.

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Petaluma Temperature Statistics

May Temperature

Petaluma Municipal Airport (2.5 miles)

  • Lowest 4 May, 2026

    42.8 °F

  • Average May

    56.9 °F

  • Highest 10 May, 2026

    77 °F

Climate (2021–Present)

Petaluma Municipal Airport (2.5 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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