Milliken Reservoir Weather Forecast

    • 52
    • 80

    Increasing Clouds

    • 50
    • 73

    Mostly Sunny

    • 52
    • 75

    Partly Sunny

    • 55
    • 74

    Mostly Cloudy

    • 54
    • 72

    Mostly Cloudy

    • 54
    • 75

    Partly Sunny

Today 16 Jul North Bay Interior Mountains

Sunny. Highs in the mid 70s to lower 90s. West Winds 5 to 10 Mph.

Tonight 16 Jul North Bay Interior Mountains

Clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Milliken Reservoir Temperature Statistics

July Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 11 July, 2026

    48.7 °F

  • Average July

    65.4 °F

  • Highest 13 July, 2026

    88 °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

    58.4 °F

  • Average High 2021–2026

    70.2 °F
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