Napa River - Napa Weather Forecast

    • 43
    • 54

    Increasing Clouds

    • 47
    • 52

    Rain

    • 49
    • 54

    Rain

    • 45
    • 55

    Rain

    • 43
    • 53

    Rain Likely

    • 45
    • 52

    Rain Likely

Today 30 Dec North Bay Interior Valleys

Partly cloudy. Patchy dense fog in the morning. Highs in the upper 40s to lower 60s. East Winds 10 to 15 Mph.

Tonight 30 Dec North Bay Interior Valleys

Mostly cloudy. A slight chance of rain after midnight. Lows in the 40s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Napa River - Napa Temperature Statistics

December Temperature

Napa, Napa County Airport (5.6 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    48.8 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (5.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.1 °F
Get WillyWeather+ to remove ads