Graton Weather Forecast

    • 44
    • 66

    Dense Fog

    • 41
    • 65

    Gradual Clearing

    • 42
    • 66

    Mostly Sunny

    • 42
    • 68

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 46
    • 68

    Partly Sunny

    • 46
    • 66

    Areas Fog

Today 31 Jan North Bay Interior Valleys

Mostly cloudy. Highs in the 50s to upper 60s. Southeast Winds 5 to 10 Mph.

Tonight 31 Jan North Bay Interior Valleys

Mostly cloudy. Areas of fog. Lows in the 40s. North Winds up to 5 Mph.

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Graton Temperature Statistics

January Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (5 miles)

  • Lowest 13 January, 2026

    30.7 °F

  • Average January

    50.1 °F

  • Highest 24 January, 2026

    71.7 °F

Climate (2021–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (5 miles)

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    72.5 °F
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