San Francisco Bay - Lone Tree Point Weather Forecast

    • 58
    • 66

    Mostly Sunny

    • 59
    • 75

    Mostly Sunny

    • 61
    • 72

    Partly Sunny

    • 55
    • 69

    Mostly Sunny

    • 56
    • 69

    Partly Sunny

    • 55
    • 66

    Mostly Sunny

    • 56
    • 71

    Sunny

Today 22 Sep East Bay Interior Valleys

Sunny. Highs in the mid 80s.

Tonight 22 Sep East Bay Interior Valleys

Mostly clear. Lows in the mid 50s. Southwest Winds up to 5 Mph late in the evening. Becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Lone Tree Point Temperature Statistics

September Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    65.9 °F

  • Highest 9 September, 2026

    99.6 °F

Climate (2021–2026)

Napa, Napa County Airport (11.8 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