Milliken Reservoir Weather Forecast

    • 53
    • 78

    Sunny

    • 51
    • 76

    Mostly Sunny

    • 49
    • 67

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 49
    • 68

    Mostly Sunny

    • 52
    • 68

    Mostly Sunny

Today 21 May North Bay Interior Mountains

Sunny. Highs in the mid 70s to upper 80s. Northeast Winds up to 5 Mph. Becoming southwest in the afternoon.

Tonight 21 May North Bay Interior Mountains

Clear. Lows in the mid 50s to lower 60s. West Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Milliken Reservoir Temperature Statistics

May Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 14 May, 2026

    45.6 °F

  • Average May

    61.9 °F

  • Highest 18 May, 2026

    84 °F

Climate (2021–Present)

Napa, Napa County Airport (11.8 miles)

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

  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
Get WillyWeather+ to remove ads