Napa Weather Forecast

    • 53
    • 80

    Increasing Clouds

    • 53
    • 81

    Partly Sunny

    • 56
    • 82

    Mostly Cloudy

    • 58
    • 81

    Mostly Cloudy

    • 58
    • 83

    Partly Sunny

    • 56
    • 83

    Partly Sunny

Today 17 Jul North Bay Interior Valleys

Sunny. Highs in the lower 70s to mid 80s. Southwest Winds 5 to 15 Mph.

Tonight 17 Jul North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. Southwest Winds 5 to 15 Mph.

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Napa Temperature Statistics

July Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 11 July, 2026

    48.7 °F

  • Average July

    65.8 °F

  • Highest 13 July, 2026

    88 °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

    58.4 °F

  • Average High 2021–2026

    70.2 °F
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