Napa River - Steamboat Slough Entrance Weather Forecast

    • 52
    • 87

    Increasing Clouds

    • 51
    • 85

    Mostly Sunny

    • 50
    • 81

    Mostly Sunny

    • 50
    • 77

    Mostly Sunny

    • 51
    • 80

    Mostly Sunny

    • 52
    • 81

    Mostly Sunny

Today 10 May North Bay Interior Valleys

Sunny. Highs in the upper 70s to lower 90s. North Winds 10 to 20 Mph. Becoming west in the afternoon.

Tonight 10 May North Bay Interior Valleys

Clear. Lows in the 50s to lower 60s. West Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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Napa River - Steamboat Slough Entrance Temperature Statistics

May Temperature

Napa, Napa County Airport (1.9 miles)

  • Lowest 6 May, 2024

    37.9 °F

  • Average May

    56.4 °F

  • Highest 1 May, 2024

    78.7 °F

Climate (2019–Present)

Napa, Napa County Airport (1.9 miles)

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  • Average Low 2019–2024

    47 °F

  • Average 2019–2024

    57.7 °F

  • Average High 2019–2024

    70.3 °F
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