Napa River - Fagan Slough Entrance Weather Forecast

    • 47
    • 72

    Increasing Clouds

    • 50
    • 76

    Partly Sunny

    • 50
    • 76

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 47
    • 68

    Partly Sunny

    • 44
    • 64

    Mostly Sunny

Today 28 Apr North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the lower 60s to mid 70s. Northwest Winds up to 5 Mph increasing to west 10 to 15 Mph in the afternoon.

Tonight 28 Apr North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 40s to lower 50s. West Winds 5 to 10 Mph.

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Napa River - Fagan Slough Entrance Temperature Statistics

April Temperature

Napa, Napa County Airport (1.2 miles)

  • Lowest 2 April, 2025

    35.7 °F

  • Average April

    56.5 °F

  • Highest 9 April, 2025

    77.6 °F

Climate (2020–Present)

Napa, Napa County Airport (1.2 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    70.7 °F
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