Steamboat Slough Weather Forecast

    • 47
    • 76

    Mostly Sunny

    • 49
    • 75

    Mostly Cloudy

    • 49
    • 70

    Mostly Cloudy

    • 48
    • 67

    Mostly Cloudy

    • 48
    • 67

    Mostly Cloudy

    • 48
    • 70

    Partly Sunny

    • 50
    • 75

    Mostly Sunny

Today 30 Apr North Bay Interior Valleys

Sunny. Highs in the upper 60s to lower 80s. Southwest Winds 5 to 15 Mph.

Tonight 30 Apr North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Areas of fog after midnight. Lows in the 40s to mid 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Steamboat Slough Temperature Statistics

April Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 3 April, 2026

    38.6 °F

  • Average April

    57.7 °F

  • Highest 5 April, 2026

    83.6 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.3 °F
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