Napa River - Napa Weather Forecast

    • 40
    • 63

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 42
    • 64

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 42
    • 63

    Patchy Fog

Today 13 Jan North Bay Interior Valleys

Sunny. Patchy dense fog in the morning. Highs in the 50s to upper 60s. Northeast Winds 5 to 10 Mph. Becoming southeast in the afternoon.

Tonight 13 Jan North Bay Interior Valleys

Mostly clear except patchy fog. Lows in the upper 30s to lower 50s. North 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

    51.2 °F

  • Highest 2 January, 2026

    61 °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

    58.1 °F

  • Average High 2021–2026

    70.1 °F
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