Steamboat Slough Weather Forecast

    • 51
    • 89

    Sunny

    • 52
    • 89

    Mostly Sunny

    • 49
    • 82

    Mostly Sunny

    • 47
    • 80

    Mostly Sunny

    • 49
    • 77

    Mostly Sunny

    • 48
    • 78

    Mostly Sunny

    • 48
    • 76

    Mostly Sunny

Today 19 Mar North Bay Interior Valleys

Sunny. Highs in the lower 80s to mid 90s. North Winds up to 5 Mph. Becoming west in the afternoon.

Tonight 19 Mar North Bay Interior Valleys

Clear. Lows in the mid 50s to upper 60s. Northwest Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Steamboat Slough Temperature Statistics

March Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    57.8 °F

  • Highest 16 March, 2026

    81 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    70.2 °F
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