Milliken Reservoir Weather Forecast

    • 63
    • 84

    Increasing Clouds

    • 51
    • 74

    Mostly Cloudy

    • 49
    • 73

    Mostly Sunny

    • 47
    • 72

    Mostly Sunny

    • 46
    • 66

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

Today 27 Aug North Bay Interior Mountains

Sunny in the morning then becoming partly cloudy. A slight chance of rain. Highs in the 80s to mid 90s. Northwest Winds around 5 Mph. Becoming southwest in the afternoon.

Tonight 27 Aug North Bay Interior Mountains

Mostly cloudy. A slight chance of rain. Lows in the mid to upper 60s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Milliken Reservoir Temperature Statistics

August Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 22 August, 2026

    50.6 °F

  • Average August

    66.3 °F

  • Highest 2 August, 2026

    86.6 °F

Climate (2021–2026)

Napa, Napa County Airport (11.8 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    70.3 °F
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