Second Napa Slough Weather Forecast

    • 51
    • 74

    Becoming Sunny

    • 53
    • 75

    Partly Sunny

    • 53
    • 75

    Partly Sunny

    • 52
    • 72

    Partly Sunny

    • 52
    • 72

    Partly Sunny

    • 52
    • 74

    Mostly Sunny

Today 2 Jul North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to lower 80s. South Winds 5 to 10 Mph. Becoming southwest 10 to 20 Mph in the afternoon.

Tonight 2 Jul North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. Southwest Winds 5 to 15 Mph.

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Second Napa Slough Temperature Statistics

July Temperature

Napa, Napa County Airport (6.8 miles)

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  • Average July

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Climate (2021–2026)

Napa, Napa County Airport (6.8 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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