Milliken Reservoir Weather Forecast

    • 43
    • 54

    Mostly Sunny

    • 45
    • 58

    Mostly Sunny

    • 45
    • 59

    Mostly Sunny

    • 43
    • 58

    Mostly Sunny

    • 42
    • 57

    Mostly Sunny

    • 43
    • 56

    Partly Sunny

Today 8 Dec North Bay Interior Mountains

Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to lower 60s. North Winds around 5 Mph in the morning. Becoming light.

Tonight 8 Dec North Bay Interior Mountains

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s to lower 50s. Light Winds. Becoming north up to 5 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Milliken Reservoir Temperature Statistics

December Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    45.9 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (11.8 miles)

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

  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.1 °F
Get WillyWeather+ to remove ads