Third Napa Slough Weather Forecast

    • 50
    • 66

    Decreasing Clouds

    • 49
    • 73

    Partly Sunny

    • 48
    • 73

    Partly Sunny

    • 50
    • 76

    Sunny

    • 50
    • 83

    Sunny

    • 53
    • 86

    Mostly Sunny

Today 5 May North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the 60s to lower 70s. West Winds 5 to 15 Mph.

Tonight 5 May North Bay Interior Valleys

Cloudy. Patchy fog. A chance of rain. Lows in the upper 40s to mid 50s. West Winds 5 to 10 Mph.

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Third Napa Slough Temperature Statistics

May Temperature

Napa, Napa County Airport (6.2 miles)

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  • Average May

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Climate (2021–Present)

Napa, Napa County Airport (6.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.2 °F
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