Guernewood Park Weather Forecast

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    Rain

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    • 56

    Rain

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    Rain

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    Rain

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    Rain Likely

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    Rain Likely

Today 18 Dec North Bay Interior Valleys

Mostly cloudy. Widespread fog in the Morning, then patchy fog in the afternoon. A chance of rain in the afternoon. Highs in the 50s. South Winds up to 5 Mph. Becoming southwest around 5 Mph in the afternoon.

Tonight 18 Dec North Bay Interior Valleys

Cloudy. Areas of fog. Lows in the 40s. Light Winds.

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Guernewood Park Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (9.9 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    44.2 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (9.9 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.5 °F
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