Fontana Weather Forecast

    • 35
    • 60

    Sunny

    • 43
    • 66

    Mostly Sunny

    • 41
    • 68

    Mostly Sunny

    • 40
    • 65

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

Today 18 Oct Lebanon

Mostly sunny. Highs in the lower 60s.

Tonight 18 Oct Lebanon

Clear. Areas of frost after midnight. Lows in the mid 30s. Light and variable Winds, becoming northeast around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

October Temperature

Muir Army Air Field / Indiantown (11.2 miles)

  • Lowest 7 October, 2026

    38.7 °F

  • Average October

    61.3 °F

  • Highest 2 October, 2026

    84.2 °F

Climate (2021–2026)

Muir Army Air Field / Indiantown (11.2 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.1 °F
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