Fontana Weather Forecast

    • 51
    • 61

    Chance Rain

    • 52
    • 65

    Slight Chance Rain Showers

    • 50
    • 70

    Partly Sunny

    • 50
    • 74

    Patchy Fog

    • 51
    • 72

    Chance Rain Showers

    • 49
    • 65

    Chance Rain Showers

Today 21 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog in the morning. Mostly cloudy with a chance of Showers and patchy drizzle in the Morning, then partly cloudy with a slight chance of Showers in the afternoon. Cooler. Highs 57 to 65. Light Winds becoming southwest 15 Mph with Gusts to 25 Mph in the afternoon. Chance of measurable precipitation 40 percent.

Tonight 21 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy. Slight chance of Showers in the Evening, then chance of Showers overnight. Lows 44 to 51. Areas of Winds southwest 15 Mph with Gusts to 25 Mph in the evening becoming light. Chance of measurable precipitation 40 percent.

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Fontana Temperature Statistics

April Temperature

Ontario International Airport (8.1 miles)

  • Lowest 15 April, 2021

    48 °F
  • Average April

    63.5 °F
  • Highest 1 April, 2021

    87.1 °F

Climate (2010–Present)

Ontario International Airport (8.1 miles)

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  • Average Low 2010–Present

    55.9 °F
  • Average 2010–Present

    66.1 °F
  • Average High 2010–Present

    79 °F
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