Milliken Reservoir Weather Forecast

    • 50
    • 58

    Rain Showers Likely

    • 52
    • 61

    Becoming Sunny

    • 48
    • 66

    Sunny

    • 47
    • 65

    Mostly Sunny

    • 47
    • 63

    Mostly Sunny

    • 48
    • 62

    Partly Sunny

    • 48
    • 62

    Partly Sunny

Today 22 Oct North Bay Interior Mountains

A chance of Showers late in the Morning, then Showers likely in the afternoon. Highs in the lower to mid 60s. South Winds 5 to 10 Mph.

Tonight 22 Oct North Bay Interior Mountains

Mostly cloudy in the evening then becoming partly cloudy. A slight chance of Showers in the evening. Patchy fog in the evening. Areas of fog after midnight. Lows in the lower 50s. West Winds up to 5 Mph. Becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Milliken Reservoir Temperature Statistics

October Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 13 October, 2026

    38.6 °F

  • Average October

    64.9 °F

  • Highest 3 October, 2026

    96.7 °F

Climate (2021–2026)

Napa, Napa County Airport (11.8 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    70.4 °F
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