Fontana Weather Forecast

    • 62
    • 85

    Partly Sunny

    • 63
    • 85

    Mostly Sunny

    • 71
    • 91

    Mostly Sunny

    • 71
    • 98

    Partly Sunny

    • 70
    • 94

    Partly Sunny

Today 12 Jul Lebanon

Sunny with Highs in the mid 80s. East Winds 5 to 10 Mph.

Tonight 12 Jul Lebanon

Partly cloudy. Near steady temperature in the mid 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

July Temperature

Muir Army Air Field / Indiantown (11.2 miles)

  • Lowest 7 July, 2026

    67.1 °F

  • Average July

    81.3 °F

  • Highest 2 July, 2026

    103.3 °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

    54.7 °F

  • Average High 2021–2026

    64 °F
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