Steamboat Slough Weather Forecast

    • 54
    • 79

    Increasing Clouds

    • 54
    • 76

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 53
    • 72

    Partly Sunny

    • 51
    • 75

    Areas Fog

    • 51
    • 77

    Areas Fog

Today 16 Jun North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Highs in the 70s to 80s. Southwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 16 Jun North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 50s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Steamboat Slough Temperature Statistics

June Temperature

Napa, Napa County Airport (7.5 miles)

  • Lowest 7 June, 2026

    45.6 °F

  • Average June

    66.8 °F

  • Highest 11 June, 2026

    96.7 °F

Climate (2021–Present)

Napa, Napa County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    70.2 °F
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