Napa River - Horseshoe Bend Weather Forecast

    • 40
    • 54

    Fog

    • 41
    • 56

    Fog

    • 42
    • 63

    Fog

    • 42
    • 63

    Partly Sunny

    • 41
    • 63

    Areas Fog

    • 43
    • 60

    Areas Fog

    • 44
    • 59

    Fog

Today 8 Dec North Bay Interior Valleys

Sunny. Highs in the upper 40s to lower 60s. South Winds up to 5 Mph.

Tonight 8 Dec North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. Lows in the 30s to upper 40s. Northeast Winds up to 5 Mph.

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Napa River - Horseshoe Bend Temperature Statistics

December Temperature

Napa, Napa County Airport (2.5 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    45.9 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (2.5 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.1 °F
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