Napa River - Edgerley Island Weather Forecast

    • 60
    • 84

    Becoming Sunny

    • 59
    • 86

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 58
    • 76

    Partly Sunny

Today 20 Aug North Bay Interior Valleys

Sunny. Highs in the lower 80s to mid 90s. Southwest Winds up to 5 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 20 Aug North Bay Interior Valleys

Mostly clear. Lows in the 50s to mid 60s. West Winds 5 to 15 Mph.

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Napa River - Edgerley Island Temperature Statistics

August Temperature

Napa, Napa County Airport (1.9 miles)

  • Lowest 3 August, 2025

    50.6 °F

  • Average August

    67.1 °F

  • Highest 6 August, 2025

    88.6 °F

Climate (2020–Present)

Napa, Napa County Airport (1.9 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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