Maxwell Farms Regional Park Weather Forecast

    • 53
    • 84

    Mostly Sunny

    • 55
    • 88

    Mostly Sunny

    • 57
    • 95

    Sunny

    • 56
    • 97

    Sunny

    • 56
    • 96

    Sunny

    • 55
    • 91

    Sunny

Today 13 Sep North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the lower 70s to mid 80s. Southwest Winds 10 to 20 Mph.

Tonight 13 Sep North Bay Interior Valleys

Mostly clear. Lows in the 50s to lower 60s. West Winds 10 to 20 Mph.

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Maxwell Farms Regional Park Temperature Statistics

September Temperature

Petaluma Municipal Airport (6.8 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    62.8 °F

  • Highest 1 September, 2025

    93.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    69.1 °F
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