Napa Weather Forecast

    • 47
    • 77

    Increasing Clouds

    • 49
    • 79

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

    • 51
    • 83

    Partly Sunny

    • 55
    • 91

    Partly Sunny

    • 52
    • 89

    Partly Sunny

Today 7 May North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the upper 60s to lower 80s. Southwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 7 May North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the 40s to mid 50s. West Winds 10 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

    57.9 °F

  • Highest 1 May, 2026

    66.7 °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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