Third Napa Slough Weather Forecast

    • 51
    • 69

    Increasing Clouds

    • 56
    • 67

    Rain

    • 53
    • 63

    Rain

    • 52
    • 67

    Partly Sunny

    • 51
    • 67

    Areas Fog

    • 52
    • 70

    Mostly Cloudy

Today 3 Nov North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 60s to lower 70s. Southwest Winds 5 to 15 Mph.

Tonight 3 Nov North Bay Interior Valleys

Mostly cloudy. Patchy fog. A slight chance of rain. Lows in the upper 40s to mid 50s. Southwest Winds 5 to 10 Mph becoming southeast after midnight.

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Third Napa Slough Temperature Statistics

November Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 1 November, 2025

    44.1 °F

  • Average November

    56.8 °F

  • Highest 1 November, 2025

    73 °F

Climate (2020–Present)

Napa, Napa County Airport (6.2 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    70.2 °F
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