Ontario International Airport Weather Forecast

    • 46
    • 67

    Patchy Fog

    • 45
    • 71

    Mostly Sunny

    • 49
    • 68

    Partly Sunny

    • 45
    • 63

    Partly Sunny

    • 43
    • 65

    Mostly Sunny

    • 46
    • 67

    Mostly Sunny

Today 30 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this morning. Becoming mostly sunny. Highs 65 to 70. Light Winds becoming west 10 Mph this afternoon.

Tonight 30 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Patchy fog. Lows around 42 in wind Sheltered Areas to 43 to 48 in warmer Locations. Areas of Winds west to 10 Mph becoming southeast with Gusts to 25 Mph overnight.

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Ontario International Airport Temperature Statistics

November Temperature

Ontario International Airport (1.2 miles)

  • Lowest 19 November, 2025

    45 °F

  • Average November

    62.5 °F

  • Highest 10 November, 2025

    93 °F

Climate (2020–Present)

Ontario International Airport (1.2 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    78.9 °F
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