Ontario Weather Forecast

    • 49
    • 78

    Mostly Sunny

    • 51
    • 81

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 54
    • 80

    Sunny

    • 53
    • 82

    Sunny

    • 52
    • 79

    Sunny

Today 27 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs around 79. Light Winds.

Tonight 27 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 38 to 43 in wind Sheltered Areas to 41 to 49 in warmer Locations. Light Winds.

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Ontario Temperature Statistics

November Temperature

Ontario International Airport (3.7 miles)

  • Lowest 19 November, 2021

    46.9 °F
  • Average November

    65.4 °F
  • Highest 12 November, 2021

    91 °F

Climate (2010–Present)

Ontario International Airport (3.7 miles)

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  • Average Low 2010–Present

    56.9 °F
  • Average 2010–Present

    67.2 °F
  • Average High 2010–Present

    80.3 °F
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