Steamboat Slough Weather Forecast

    • 51
    • 74

    Becoming Sunny

    • 51
    • 77

    Sunny

    • 52
    • 78

    Mostly Sunny

    • 52
    • 77

    Mostly Sunny

    • 52
    • 75

    Partly Sunny

    • 50
    • 72

    Partly Sunny

Today 17 Oct North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to lower 80s. East Winds 5 to 10 Mph. Becoming southwest 10 to 20 Mph in the afternoon.

Tonight 17 Oct North Bay Interior Valleys

Mostly clear. Lows in the upper 40s to mid 50s. Southwest Winds 10 to 20 Mph. Becoming northwest 5 to 10 Mph after midnight.

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Steamboat Slough Temperature Statistics

October Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 12 October, 2025

    42.1 °F

  • Average October

    60.9 °F

  • Highest 7 October, 2025

    88 °F

Climate (2020–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.3 °F
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