Rohnert Park Weather Forecast

    • 51
    • 76

    Areas Fog

    • 52
    • 79

    Areas Fog

    • 54
    • 86

    Partly Sunny

    • 55
    • 86

    Partly Sunny

    • 52
    • 81

    Partly Sunny

    • 50
    • 78

    Partly Sunny

Today 21 Sep North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to lower 80s. Southwest Winds 5 to 15 Mph.

Tonight 21 Sep North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rohnert Park Temperature Statistics

September Temperature

Petaluma Municipal Airport (7.5 miles)

  • Lowest 7 September, 2026

    44.6 °F

  • Average September

    65 °F

  • Highest 9 September, 2026

    96.8 °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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