Ontario International Airport Weather Forecast

    • 58
    • 90

    Mostly Sunny

    • 58
    • 81

    Increasing Clouds

    • 56
    • 73

    Partly Sunny

    • 63
    • 85

    Mostly Sunny

    • 64
    • 93

    Breezy

    • 70
    • 102

    Breezy

    • 66
    • 101

    Hot

Today 18 Oct San Bernardino and Riverside County Valleys

Mostly clear in the evening. Becoming partly cloudy. Cooler. Lows 51 to 58. Light Winds.

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Ontario International Airport Temperature Statistics

October Temperature

Ontario, Ontario International Airport (1.2 miles)

  • Lowest 4 October, 2017

    55.9 °F
  • Average October

    70.9 °F
  • Highest 6 October, 2017

    97 °F

Climate (2010–Present)

Ontario, Ontario International Airport (1.2 miles)

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  • Average Low 2010–Present

    55.9 °F
  • Average 2010–Present

    66.6 °F
  • Average High 2010–Present

    80 °F
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