Napa Weather Forecast

    • 49
    • 79

    Becoming Sunny

    • 50
    • 82

    Mostly Sunny

    • 51
    • 83

    Mostly Sunny

    • 53
    • 89

    Partly Sunny

    • 52
    • 85

    Mostly Sunny

    • 50
    • 79

    Mostly Sunny

Today 8 May North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the lower 70s to mid 80s. West Winds 5 to 15 Mph.

Tonight 8 May North Bay Interior Valleys

Mostly clear. Lows in the upper 40s to lower 60s. West Winds 5 to 15 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

    58.8 °F

  • Highest 6 May, 2026

    73 °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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