Carquinez Strait - Selby Weather Forecast

    • 57
    • 71

    Increasing Clouds

    • 58
    • 74

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 61
    • 77

    Partly Sunny

    • 57
    • 73

    Mostly Sunny

    • 57
    • 73

    Mostly Sunny

    • 56
    • 75

    Sunny

Today 13 Aug East Bay Interior Valleys

Sunny. Highs in the 80s. West Winds 15 to 20 Mph.

Tonight 13 Aug East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph.

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Carquinez Strait - Selby Temperature Statistics

August Temperature

Napa, Napa County Airport (10.6 miles)

  • Lowest 3 August, 2025

    50.6 °F

  • Average August

    66.6 °F

  • Highest 6 August, 2025

    88.6 °F

Climate (2020–Present)

Napa, Napa County Airport (10.6 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.5 °F
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