Napa River - North Slough Entrance Weather Forecast

    • 53
    • 62

    Chance Rain

    • 47
    • 59

    Rain

    • 49
    • 62

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 52
    • 76

    Mostly Sunny

    • 53
    • 77

    Partly Sunny

Today 31 Mar North Bay Interior Valleys

Mostly cloudy. A chance of rain. Highs in the 60s. Southwest Winds 5 to 15 Mph.

Tonight 31 Mar North Bay Interior Valleys

Mostly cloudy. A slight chance of rain in the evening. A chance of rain after midnight. Patchy fog after midnight. Lows in the 40s to mid 50s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Napa River - North Slough Entrance Temperature Statistics

March Temperature

Napa, Napa County Airport (2.5 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    60.5 °F

  • Highest 20 March, 2026

    87.7 °F

Climate (2021–Present)

Napa, Napa County Airport (2.5 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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