Sonoma Valley Regional Park Weather Forecast

    • 55
    • 89

    Sunny

    • 56
    • 91

    Increasing Clouds

    • 52
    • 88

    Mostly Sunny

    • 51
    • 88

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

    • 50
    • 77

    Mostly Sunny

    • 50
    • 77

    Mostly 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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Sonoma Valley Regional Park Temperature Statistics

May Temperature

Petaluma Municipal Airport (8.1 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 (8.1 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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