Shurtleff Park Weather Forecast

    • 53
    • 77

    Becoming Sunny

    • 57
    • 87

    Partly Sunny

    • 56
    • 84

    Partly Sunny

    • 53
    • 80

    Mostly Sunny

    • 52
    • 77

    Partly Sunny

    • 53
    • 76

    Mostly Sunny

Today 22 Sep North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 70s to mid 80s. South Winds 5 to 10 Mph.

Tonight 22 Sep North Bay Interior Valleys

Clear in the evening then becoming partly cloudy. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest Winds 5 to 10 Mph. Becoming northwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Shurtleff Park Temperature Statistics

September Temperature

Napa, Napa County Airport (5 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    66.2 °F

  • Highest 9 September, 2026

    99.6 °F

Climate (2021–2026)

Napa, Napa County Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    70.3 °F
Get WillyWeather+ to remove ads