Napa Weather Forecast

    • 50
    • 80

    Partly Sunny

    • 51
    • 75

    Partly Sunny

    • 49
    • 76

    Mostly Sunny

    • 50
    • 78

    Mostly Sunny

    • 51
    • 82

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

Today 11 May North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 70s to mid 80s. South Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 11 May North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 40s to lower 60s. Southwest Winds 10 to 20 Mph.

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Napa Temperature Statistics

May Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 4 May, 2026

    46.7 °F

  • Average May

    60 °F

  • Highest 6 May, 2026

    74.6 °F

Climate (2021–Present)

Napa, Napa County Airport (6.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
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