Rancho Fontana Weather Forecast

    • 54
    • 70

    Mostly Cloudy

    • 49
    • 64

    Windy

    • 50
    • 63

    Windy

    • 49
    • 76

    Mostly Sunny

    • 50
    • 79

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

Today 24 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy in the morning. Becoming partly cloudy. Highs 69 to 74. Light Winds.

Tonight 24 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers overnight. Lows 46 to 55. Light Winds. Chance of measurable precipitation 20 percent.

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Rancho Fontana Temperature Statistics

October Temperature

Ontario International Airport (7.5 miles)

  • Lowest 11 October, 2020

    60.1 °F
  • Average October

    76.8 °F
  • Highest 1 October, 2020

    106 °F

Climate (2010–Present)

Ontario International Airport (7.5 miles)

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  • Average Low 2010–Present

    57.1 °F
  • Average 2010–Present

    67.4 °F
  • Average High 2010–Present

    80.5 °F
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