Penngrove Weather Forecast

    • 50
    • 67

    Decreasing Clouds

    • 47
    • 71

    Areas Fog

    • 54
    • 70

    Mostly Cloudy

    • 49
    • 66

    Chance Rain

    • 47
    • 64

    Chance Rain

    • 48
    • 66

    Slight Chance Rain

    • 48
    • 71

    Mostly Sunny

Today 22 Oct North Bay Interior Valleys

Mostly cloudy. Highs in the 60s to lower 70s. West Winds 10 to 20 Mph.

Tonight 22 Oct North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s to mid 50s. West Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Penngrove Temperature Statistics

October Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 17 October, 2025

    41 °F

  • Average October

    56.3 °F

  • Highest 7 October, 2025

    86 °F

Climate (2020–Present)

Petaluma Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.8 °F
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