Francis Nielson Ranch Park Weather Forecast

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    Rain

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    Chance Rain

Today 20 Dec North Bay Interior Valleys

Patchy fog. Rain. Highs in the mid 50s to lower 60s. Southeast Winds around 5 Mph.

Tonight 20 Dec North Bay Interior Valleys

Rain. Lows in the lower to mid 50s. South Winds 10 to 20 Mph with Gusts to around 35 Mph.

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Francis Nielson Ranch Park Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (5.6 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    45 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (5.6 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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