Fontana Weather Forecast

    • 29
    • 50

    Mostly Sunny

    • 37
    • 58

    Partly Sunny

    • 47
    • 70

    Slight Chance Rain Showers

    • 39
    • 62

    Mostly Sunny

    • 50
    • 63

    Mostly Cloudy

    • 60
    • 78

    Mostly Cloudy

    • 64
    • 85

    Mostly Cloudy

Today 8 Apr Lebanon

Sunny. Near steady temperature in the lower 50s. South Winds around 5 Mph.

Tonight 8 Apr Lebanon

Mostly clear. Widespread frost after midnight. Lows in the upper 20s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

April Temperature

Muir Army Air Field / Indiantown (11.2 miles)

  • Lowest 3 April, 2026

    41.7 °F

  • Average April

    54.6 °F

  • Highest 4 April, 2026

    82.8 °F

Climate (2021–Present)

Muir Army Air Field / Indiantown (11.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    64 °F
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