Sonoma Creek - Richard Janson Bridge Weather Forecast

    • 51
    • 72

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 53
    • 73

    Sunny

    • 52
    • 74

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 52
    • 71

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

Today 19 Jun North Bay Interior Valleys

Sunny, breezy. Highs in the upper 60s to lower 80s. West Winds 10 to 20 Mph increasing to 20 to 30 Mph in the afternoon.

Tonight 19 Jun North Bay Interior Valleys

Mostly clear. Breezy. Lows in the mid 40s to lower 50s. West Winds 20 to 30 Mph with Gusts to around 45 Mph.

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Sonoma Creek - Richard Janson Bridge Temperature Statistics

June Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 12 June, 2025

    44.1 °F

  • Average June

    61.9 °F

  • Highest 17 June, 2025

    78.1 °F

Climate (2020–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.6 °F
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