Penngrove Weather Forecast

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    Rain

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    Rain

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    Rain

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    • 55

    Rain

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    Rain

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    Rain

Today 19 Dec North Bay Interior Valleys

Patchy dense fog in the morning. Rain. Highs in the mid to upper 50s. South Winds 10 to 20 Mph.

Tonight 19 Dec North Bay Interior Valleys

Cloudy. Patchy fog in the evening. Areas of fog after midnight. A chance of rain. Lows in the mid 40s to lower 50s. Southwest Winds 10 to 15 Mph. Becoming west up to 5 Mph after midnight.

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Penngrove Temperature Statistics

December Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    43 °F

  • Highest 3 December, 2025

    66.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.6 °F
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