Steamboat Slough Weather Forecast

    • 53
    • 82

    Partly Sunny

    • 54
    • 86

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 57
    • 90

    Mostly Sunny

    • 57
    • 89

    Sunny

    • 57
    • 90

    Mostly Sunny

    • 53
    • 82

    Mostly Cloudy

Today 15 Mar North Bay Interior Valleys

Sunny. Highs in the 70s to 80s. West Winds 5 to 10 Mph.

Tonight 15 Mar North Bay Interior Valleys

Partly cloudy. Lows in the 50s to lower 60s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Steamboat Slough Temperature Statistics

March Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    57.2 °F

  • Highest 7 March, 2026

    77 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    70.1 °F
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