Napa River - Napa Weather Forecast

    • 41
    • 58

    Fog

    • 36
    • 60

    Mostly Sunny

    • 39
    • 55

    Mostly Cloudy

    • 39
    • 59

    Areas Fog

    • 42
    • 59

    Mostly Cloudy

    • 42
    • 58

    Fog

Today 23 Jan North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Areas of fog in the morning. Highs in the 50s to lower 60s. East Winds up to 5 Mph. Becoming south in the afternoon.

Tonight 23 Jan North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog. Lows in the 30s to upper 40s. North Winds 5 to 10 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

    48.9 °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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