Fontana Weather Forecast

    • 54
    • 62

    Chance Rain

    • 42
    • 68

    Mostly Sunny

    • 44
    • 63

    Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 47
    • 69

    Partly Sunny

Today 4 Oct Lebanon

Cloudy with a chance of light rain with Areas of drizzle. Cooler. Near steady temperature in the lower 60s. East Winds around 5 Mph. Chance of rain 40 percent.

Tonight 4 Oct Lebanon

Mostly cloudy. A slight chance of light rain in the evening. Patchy fog. Lows in the mid 50s. Northeast Winds around 5 Mph, becoming west after midnight. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

October Temperature

Muir Army Air Field / Indiantown (11.2 miles)

  • Lowest 2 October, 2026

    57 °F

  • Average October

    68.4 °F

  • Highest 2 October, 2026

    84.2 °F

Climate (2021–2026)

Muir Army Air Field / Indiantown (11.2 miles)

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

  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.1 °F
Get WillyWeather+ to remove ads