Shurtleff Park Weather Forecast

    • 58
    • 90

    Sunny

    • 56
    • 90

    Mostly Sunny

    • 57
    • 87

    Mostly Sunny

    • 59
    • 90

    Partly Sunny

    • 59
    • 90

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

Today 29 Sep North Bay Interior Valleys

Sunny. Highs in the lower 80s to mid 90s. West Winds 5 to 15 Mph.

Tonight 29 Sep North Bay Interior Valleys

Mostly clear. Lows in the lower 50s to mid 60s. West Winds 5 to 10 Mph.

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Shurtleff Park Temperature Statistics

September Temperature

Napa, Napa County Airport (5 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    66 °F

  • Highest 9 September, 2026

    99.6 °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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