Yountville Weather Forecast

    • 50
    • 74

    Increasing Clouds

    • 49
    • 79

    Partly Sunny

    • 50
    • 82

    Mostly Cloudy

    • 50
    • 79

    Areas Fog

    • 52
    • 83

    Areas Fog

    • 53
    • 85

    Areas Fog

Today 14 Aug North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the 60s to 70s. South Winds 10 to 15 Mph.

Tonight 14 Aug North Bay Interior Valleys

Cloudy. Patchy fog. Lows in the 40s to upper 50s. Southwest Winds 5 to 10 Mph.

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Yountville Temperature Statistics

August Temperature

Napa, Napa County Airport (13.7 miles)

  • Lowest 6 August, 2026

    51.7 °F

  • Average August

    66.6 °F

  • Highest 2 August, 2026

    86.6 °F

Climate (2021–2026)

Napa, Napa County Airport (13.7 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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