Steamboat Slough Weather Forecast

    • 49
    • 78

    Partly Sunny

    • 45
    • 79

    Decreasing Clouds

    • 48
    • 78

    Mostly Sunny

    • 49
    • 81

    Partly Sunny

    • 46
    • 72

    Chance Rain

    • 45
    • 64

    Chance Rain

    • 42
    • 65

    Rain Likely

Today 26 Mar North Bay Interior Valleys

Partly cloudy. Highs in the 70s to lower 80s. North Winds 10 to 20 Mph.

Tonight 26 Mar North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Breezy. Lows in the mid 40s to lower 60s. Northwest Winds 20 to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • 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

    60.5 °F

  • Highest 20 March, 2026

    87.7 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
Get WillyWeather+ to remove ads