Sugarloaf Ridge State Park Weather Forecast

    • 51
    • 72

    Decreasing Clouds

    • 53
    • 71

    Partly Sunny

    • 53
    • 71

    Mostly Sunny

    • 53
    • 69

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 56
    • 81

    Sunny

Today 23 Jul North Bay Interior Mountains

Partly cloudy in the morning then becoming sunny. Highs in the mid 60s to upper 70s. Southwest Winds 5 to 10 Mph.

Tonight 23 Jul North Bay Interior Mountains

Mostly clear in the evening then becoming partly cloudy. Lows in the 50s. Southwest Winds 5 to 10 Mph.

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Sugarloaf Ridge State Park Temperature Statistics

July Temperature

Petaluma Municipal Airport (13.7 miles)

  • Lowest 5 July, 2025

    42.8 °F

  • Average July

    59.3 °F

  • Highest 10 July, 2025

    87.8 °F

Climate (2020–Present)

Petaluma Municipal Airport (13.7 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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