Napa River - Napa Weather Forecast

    • 44
    • 61

    Increasing Clouds

    • 45
    • 60

    Mostly Cloudy

    • 43
    • 62

    Partly Sunny

    • 42
    • 62

    Mostly Sunny

    • 41
    • 60

    Partly Sunny

    • 41
    • 59

    Areas Fog

Today 20 Jan North Bay Interior Valleys

Mostly cloudy. Patchy dense fog in the morning. Highs in the 50s to mid 60s. East Winds 5 to 10 Mph. Becoming southeast in the afternoon.

Tonight 20 Jan North Bay Interior Valleys

Mostly cloudy. Patchy fog. Lows in the mid 30s to lower 50s. East Winds up to 5 Mph.

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Napa River - Napa Temperature Statistics

January Temperature

Napa, Napa County Airport (5.6 miles)

  • Lowest 9 January, 2026

    32 °F

  • Average January

    49.4 °F

  • Highest 15 January, 2026

    62.1 °F

Climate (2021–Present)

Napa, Napa County Airport (5.6 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    70 °F
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