Steamboat Slough Weather Forecast

    • 38
    • 63

    Decreasing Clouds

    • 41
    • 59

    Mostly Sunny

    • 44
    • 63

    Mostly Sunny

    • 46
    • 63

    Areas Fog

    • 45
    • 63

    Areas Fog

    • 45
    • 65

    Patchy Fog

Today 3 Dec North Bay Interior Valleys

Partly cloudy. Highs in the upper 50s to mid 60s. North Winds 10 to 15 Mph.

Tonight 3 Dec North Bay Interior Valleys

Partly cloudy. Breezy. Lows in the 30s to upper 40s. Northwest Winds 20 to 30 Mph with Gusts to around 50 Mph.

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Steamboat Slough Temperature Statistics

December Temperature

Napa, Napa County Airport (7.5 miles)

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  • Average December

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Climate (2020–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.2 °F
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