Russian River Mouth Weather Forecast

    • 50
    • 54

    Partly Sunny

    • 50
    • 55

    Mostly Sunny

    • 49
    • 57

    Mostly Sunny

    • 51
    • 56

    Partly Sunny

    • 55
    • 57

    Chance Rain

    • 52
    • 57

    Rain Likely

    • 51
    • 55

    Chance Rain

Today 11 Dec Coastal North Bay Including Point Reyes National Seashore

Sunny. Highs in the upper 50s. Northwest Winds 5 to 10 Mph.

Tonight 11 Dec Coastal North Bay Including Point Reyes National Seashore

Mostly clear. Lows in the mid 40s. Northeast Winds around 5 Mph. Becoming east after midnight.

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  • Temperature Real-Time

Russian River Mouth Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (16.8 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    44.8 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (16.8 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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