Napa River - Napa Weather Forecast

    • 55
    • 85

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 58
    • 90

    Mostly Sunny

    • 58
    • 90

    Sunny

    • 60
    • 90

    Sunny

    • 61
    • 92

    Mostly Sunny

Today 15 Mar North Bay Interior Valleys

Sunny. Highs in the mid 70s to upper 80s. Northwest Winds 5 to 10 Mph.

Tonight 15 Mar North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s to mid 60s. Northwest Winds 5 to 10 Mph.

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Napa River - Napa Temperature Statistics

March Temperature

Napa, Napa County Airport (5.6 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    57.2 °F

  • Highest 7 March, 2026

    77 °F

Climate (2021–Present)

Napa, Napa County Airport (5.6 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    70.1 °F
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