Milliken Reservoir Weather Forecast

    • 55
    • 68

    Sunny

    • 54
    • 69

    Sunny

    • 52
    • 70

    Mostly Sunny

    • 49
    • 60

    Partly Sunny

    • 49
    • 61

    Partly Sunny

    • 52
    • 59

    Chance Rain

Today 19 Oct North Bay Interior Mountains

Sunny. Highs in the 60s to mid 70s. West Winds 5 to 10 Mph.

Tonight 19 Oct North Bay Interior Mountains

Clear. Lows in the upper 50s. North Winds 10 to 20 Mph.

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Milliken Reservoir Temperature Statistics

October Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 12 October, 2025

    42.1 °F

  • Average October

    60.2 °F

  • Highest 7 October, 2025

    88 °F

Climate (2020–Present)

Napa, Napa County Airport (11.8 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    70.3 °F
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