Rohnert Park Weather Forecast

    • 56
    • 83

    Becoming Sunny

    • 62
    • 88

    Partly Sunny

    • 65
    • 93

    Partly Sunny

    • 59
    • 89

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 55
    • 79

    Partly Sunny

Today 7 Sep North Bay Interior Valleys

Sunny. Patchy dense fog in the morning. Highs in the mid 70s to lower 90s. Southeast Winds up to 5 Mph. Becoming southwest in the afternoon.

Tonight 7 Sep North Bay Interior Valleys

Mostly clear. Lows in the mid 50s to lower 60s. West Winds 5 to 10 Mph. Becoming north after midnight.

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Rohnert Park Temperature Statistics

September Temperature

Petaluma Municipal Airport (7.5 miles)

  • Lowest 1 September, 2026

    53.6 °F

  • Average September

    61.2 °F

  • Highest 1 September, 2026

    75.2 °F

Climate (2021–2026)

Petaluma Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    44.7 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.5 °F
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