Fontana Weather Forecast

    • 69
    • 87

    Thunderstorms

    • 66
    • 85

    Partly Sunny

    • 63
    • 87

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

    • 69
    • 87

    Partly Sunny

    • 72
    • 91

    Slight Chance Thunderstorms

Today 1 Jul Lebanon

Partly sunny with a slight chance of Showers and Thunderstorms this Morning, then mostly cloudy with Showers and Thunderstorms likely this afternoon. Highs in the upper 80s. Temperature falling into the lower 80s this afternoon. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 1 Jul Lebanon

Mostly cloudy with a chance of Thunderstorms. Showers, mainly in the evening. Humid with Lows in the upper 60s. Southwest Winds around 5 Mph. Chance of rain 80 percent.

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Fontana Temperature Statistics

July Temperature

Muir Army Air Field / Indiantown (11.2 miles)

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  • Average July

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Climate (2020–Present)

Muir Army Air Field / Indiantown (11.2 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.3 °F
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