Shurtleff Park Weather Forecast

    • 65
    • 87

    Increasing Clouds

    • 68
    • 93

    Mostly Cloudy

    • 59
    • 89

    Partly Sunny

    • 55
    • 82

    Partly Sunny

    • 56
    • 80

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

Today 8 Sep North Bay Interior Valleys

Sunny. Highs in the 80s to 90s. East Winds up to 5 Mph. Becoming south in the afternoon.

Tonight 8 Sep North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s to mid 60s. West Winds 5 to 10 Mph. Becoming northwest after midnight.

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Shurtleff Park Temperature Statistics

September Temperature

Napa, Napa County Airport (5 miles)

  • Lowest 5 September, 2026

    48 °F

  • Average September

    64 °F

  • Highest 5 September, 2026

    77 °F

Climate (2021–2026)

Napa, Napa County Airport (5 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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