Napa River - Steamboat Slough Entrance Weather Forecast

    • 50
    • 74

    Increasing Clouds

    • 50
    • 69

    Mostly Cloudy

    • 48
    • 68

    Partly Sunny

    • 49
    • 67

    Slight Chance Rain

    • 50
    • 68

    Partly Sunny

    • 50
    • 75

    Mostly Sunny

    • 50
    • 78

    Mostly Sunny

Today 1 May North Bay Interior Valleys

Partly cloudy. Highs in the upper 60s to lower 80s. South Winds around 5 Mph. Becoming southwest 10 to 15 Mph in the afternoon.

Tonight 1 May North Bay Interior Valleys

Mostly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. Southwest Winds 5 to 10 Mph.

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Napa River - Steamboat Slough Entrance Temperature Statistics

May Temperature

Napa, Napa County Airport (1.9 miles)

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Climate (2021–Present)

Napa, Napa County Airport (1.9 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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