Napa River - White Slough Entrance Weather Forecast

    • 54
    • 74

    Partly Sunny

    • 55
    • 73

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 51
    • 74

    Partly Sunny

    • 55
    • 74

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 53
    • 73

    Mostly Sunny

Today 22 Mar Carquinez Strait and Delta

Mostly sunny. Highs 79 to 85. West Winds up to 10 Mph.

Tonight 22 Mar Carquinez Strait and Delta

Mostly clear. Lows around 53. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Napa River - White Slough Entrance Temperature Statistics

March Temperature

Napa, Napa County Airport (5 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    60.4 °F

  • Highest 20 March, 2026

    87.1 °F

Climate (2021–Present)

Napa, Napa County Airport (5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
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