Napa Weather Forecast

    • 44
    • 66

    Mostly Sunny

    • 42
    • 65

    Mostly Sunny

    • 43
    • 63

    Partly Sunny

    • 42
    • 64

    Mostly Sunny

    • 41
    • 63

    Mostly Sunny

    • 42
    • 61

    Patchy Fog

Today 15 Jan North Bay Interior Valleys

Sunny. Patchy dense fog in the morning. Highs in the 60s to lower 70s. East Winds 5 to 15 Mph.

Tonight 15 Jan North Bay Interior Valleys

Mostly clear. Lows in the lower 40s to mid 50s. Northeast Winds 5 to 10 Mph.

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Napa Temperature Statistics

January Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 9 January, 2026

    32 °F

  • Average January

    49.9 °F

  • Highest 2 January, 2026

    61 °F

Climate (2021–Present)

Napa, Napa County Airport (6.2 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    70.1 °F
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