Napa River - Napa Weather Forecast

    • 49
    • 81

    Sunny

    • 53
    • 83

    Mostly Sunny

    • 50
    • 78

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 53
    • 85

    Sunny

    • 52
    • 90

    Mostly Sunny

Today 14 May North Bay Interior Valleys

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

Tonight 14 May North Bay Interior Valleys

Clear. Lows in the 40s to upper 50s. West Winds 10 to 15 Mph with Gusts to around 30 Mph.

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Napa River - Napa Temperature Statistics

May Temperature

Napa, Napa County Airport (5.6 miles)

  • Lowest 4 May, 2026

    46.7 °F

  • Average May

    60.3 °F

  • Highest 11 May, 2026

    79 °F

Climate (2021–Present)

Napa, Napa County Airport (5.6 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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