Sugarloaf Ridge State Park Weather Forecast

    • 48
    • 78

    Mostly Sunny

    • 51
    • 76

    Sunny

    • 57
    • 82

    Sunny

    • 53
    • 86

    Sunny

    • 51
    • 79

    Sunny

    • 51
    • 77

    Sunny

    • 56
    • 76

    Sunny

Today 15 Jun North Bay Interior Mountains

Sunny. Highs in the lower 70s to mid 80s. South Winds 5 to 10 Mph.

Tonight 15 Jun North Bay Interior Mountains

Partly cloudy in the evening then becoming mostly clear. Lows in the upper 40s to mid 50s. West Winds 5 to 10 Mph.

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Sugarloaf Ridge State Park Temperature Statistics

June Temperature

Petaluma Municipal Airport (13.7 miles)

  • Lowest 2 June, 2025

    42.8 °F

  • Average June

    55.9 °F

  • Highest 3 June, 2025

    73.4 °F

Climate (2020–Present)

Petaluma Municipal Airport (13.7 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    69.3 °F
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