Napa River - Napa Weather Forecast

    • 53
    • 83

    Mostly Sunny

    • 59
    • 80

    Sunny

    • 63
    • 89

    Sunny

    • 64
    • 95

    Sunny

    • 62
    • 96

    Sunny

    • 60
    • 92

    Sunny

Today 24 Sep North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Highs in the lower 70s to mid 80s. West Winds 10 to 20 Mph.

Tonight 24 Sep North Bay Interior Valleys

Mostly clear. Lows in the 40s to upper 50s. West Winds 10 to 20 Mph.

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Napa River - Napa Temperature Statistics

September Temperature

Napa, Napa County Airport (5.6 miles)

  • Lowest 11 September, 2020

    50 °F
  • Average September

    65.6 °F
  • Highest 7 September, 2020

    104 °F

Climate (2010–Present)

Napa, Napa County Airport (5.6 miles)

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  • Average Low 2010–Present

    47.5 °F
  • Average 2010–Present

    57.7 °F
  • Average High 2010–Present

    70.6 °F
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