Napa Weather Forecast

    • 57
    • 85

    Increasing Clouds

    • 56
    • 81

    Increasing Clouds

    • 56
    • 82

    Partly Sunny

    • 58
    • 84

    Partly Sunny

    • 56
    • 83

    Partly Sunny

    • 55
    • 80

    Partly Sunny

    • 55
    • 81

    Partly Sunny

Today 23 Aug North Bay Interior Valleys

Partly cloudy. Highs in the mid 70s to lower 90s. Southwest Winds 10 to 15 Mph.

Tonight 23 Aug North Bay Interior Valleys

Mostly cloudy. Lows in the 50s. South Winds 10 to 15 Mph.

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Napa Temperature Statistics

August Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 6 August, 2026

    51.7 °F

  • Average August

    66.1 °F

  • Highest 2 August, 2026

    86.6 °F

Climate (2021–2026)

Napa, Napa County Airport (6.2 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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