Napa Weather Forecast

    • 47
    • 51

    Rain

    • 49
    • 56

    Rain

    • 52
    • 55

    Rain

    • 50
    • 56

    Rain

    • 46
    • 53

    Rain

    • 45
    • 52

    Rain Likely

    • 41
    • 53

    Chance Rain

Today 31 Dec North Bay Interior Valleys

Rain likely late in the Morning, then rain in the afternoon. Highs in the upper 40s to mid 50s. East Winds 10 to 15 Mph.

Tonight 31 Dec North Bay Interior Valleys

Rain. Patchy dense fog after midnight. Lows in the mid 40s to lower 50s. East Winds 10 to 20 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Napa Temperature Statistics

December Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 28 December, 2025

    34 °F

  • Average December

    48.5 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (6.2 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