Fontana Weather Forecast

    • 32
    • 49

    Chance Rain Showers

    • 39
    • 51

    Partly Sunny

    • 43
    • 57

    Chance Rain Showers

    • 47
    • 58

    Rain

    • 44
    • 53

    Rain Showers Likely

    • 43
    • 57

    Partly Sunny

    • 46
    • 63

    Partly Sunny

Today 25 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy with Showers and isolated Thunderstorms in the Morning, then partly cloudy with a chance of Showers and slight chance of Thunderstorms in the afternoon. Highs 47 to 52. Snow level 2500 feet in the afternoon. Areas of Winds west 20 to 30 Mph. Gusts to 35 Mph. Becoming 50 Mph in the afternoon.

Tonight 25 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Chance of Showers in the evening. Areas of frost in Colder. Wind Sheltered Locations overnight. Colder. Lows 28 to 33. Little or no snow accumulation. Snow level 2500 feet. Areas of Winds west 15 to 20 Mph. Gusts to 30 Mph becoming 35 Mph overnight. Chance of measurable precipitation 50 percent.

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Fontana Temperature Statistics

January Temperature

Ontario International Airport (8.1 miles)

  • Lowest 4 January, 2021

    42.1 °F
  • Average January

    58.9 °F
  • Highest 15 January, 2021

    88 °F

Climate (2010–Present)

Ontario International Airport (8.1 miles)

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  • Average Low 2010–Present

    56.5 °F
  • Average 2010–Present

    66.7 °F
  • Average High 2010–Present

    79.7 °F
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