Penngrove Weather Forecast

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    Rain

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    • 55

    Rain

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    Rain

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    Rain

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    Rain Likely

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    Rain Likely

Today 31 Dec North Bay Interior Valleys

A slight chance of rain in the Morning, then rain in the afternoon. Highs in the upper 40s to mid 50s. Southeast Winds 10 to 15 Mph.

Tonight 31 Dec North Bay Interior Valleys

Rain. Lows in the upper 40s. East Winds 10 to 20 Mph.

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Penngrove Temperature Statistics

December Temperature

Petaluma Municipal Airport (4.3 miles)

  • Lowest 28 December, 2025

    32 °F

  • Average December

    46.8 °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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