Graton Weather Forecast

    • 53
    • 87

    Becoming Sunny

    • 55
    • 89

    Mostly Sunny

    • 56
    • 88

    Partly Sunny

    • 50
    • 82

    Partly Sunny

    • 49
    • 79

    Partly Sunny

    • 49
    • 75

    Mostly Cloudy

Today 18 Mar North Bay Interior Valleys

Sunny. Highs in the upper 70s to mid 90s. North Winds up to 5 Mph. Becoming south in the afternoon.

Tonight 18 Mar North Bay Interior Valleys

Clear. Lows in the lower 50s to mid 60s. Northwest Winds up to 5 Mph.

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Graton Temperature Statistics

March Temperature

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

  • Lowest 11 March, 2026

    39 °F

  • Average March

    58.9 °F

  • Highest 16 March, 2026

    88 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    72.7 °F
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