Napa River - Maxwell Bridge Weather Forecast

    • 41
    • 53

    Rain Showers

    • 36
    • 51

    Partly Sunny

    • 36
    • 52

    Mostly Sunny

    • 34
    • 53

    Mostly Sunny

    • 36
    • 53

    Mostly Sunny

    • 40
    • 52

    Partly Sunny

Today 26 Dec North Bay Interior Valleys

Showers. A slight chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the afternoon. Highs in the 40s to upper 50s. South Winds 10 to 20 Mph.

Tonight 26 Dec North Bay Interior Valleys

Mostly cloudy in the evening then becoming partly cloudy. A chance of Showers and a slight chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the 30s to upper 40s. Southwest Winds 5 to 10 Mph becoming northwest after midnight.

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Napa River - Maxwell Bridge Temperature Statistics

December Temperature

Napa, Napa County Airport (5 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    48.2 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (5 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.1 °F
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