Napa River - Edgerley Island Weather Forecast

    • 67
    • 93

    Partly Sunny

    • 60
    • 84

    Mostly Sunny

    • 58
    • 77

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

Today 9 Sep North Bay Interior Valleys

Partly cloudy. Highs upper 80s to 103. North Winds up to 5 Mph increasing to west 10 to 15 Mph in the afternoon.

Tonight 9 Sep North Bay Interior Valleys

Partly cloudy. Lows in the 60s to lower 70s. West Winds 5 to 10 Mph.

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Napa River - Edgerley Island Temperature Statistics

September Temperature

Napa, Napa County Airport (1.9 miles)

  • Lowest 6 September, 2026

    46 °F

  • Average September

    63.8 °F

  • Highest 5 September, 2026

    79.6 °F

Climate (2021–2026)

Napa, Napa County Airport (1.9 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    70.3 °F
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