Sonoma Creek - Richard Janson Bridge Weather Forecast

    • 37
    • 55

    Increasing Clouds

    • 38
    • 54

    Mostly Cloudy

    • 37
    • 55

    Partly Sunny

    • 39
    • 55

    Mostly Sunny

    • 43
    • 58

    Mostly Sunny

    • 44
    • 60

    Mostly Sunny

    • 45
    • 61

    Mostly Sunny

Today 9 Jan North Bay Interior Valleys

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

Tonight 9 Jan North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s to lower 40s. East Winds 5 to 10 Mph.

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Sonoma Creek - Richard Janson Bridge Temperature Statistics

January Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 6 January, 2026

    44.1 °F

  • Average January

    53.6 °F

  • Highest 2 January, 2026

    61 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    70.1 °F
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