Ontario International Airport Weather Forecast

    • 60
    • 82

    Mostly Sunny

    • 60
    • 86

    Partly Sunny

    • 61
    • 87

    Partly Sunny

    • 62
    • 87

    Mostly Sunny

    • 62
    • 88

    Mostly Sunny

    • 63
    • 91

    Mostly Sunny

    • 63
    • 91

    Mostly Sunny

Today 2 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 81 to 87. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph.

Tonight 2 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy. Patchy dense fog overnight. Lows 54 to 59. Areas of Winds west 10 to 15 Mph in the evening becoming light.

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Ontario International Airport Temperature Statistics

July Temperature

Ontario International Airport (1.2 miles)

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Climate (2021–2026)

Ontario International Airport (1.2 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67 °F

  • Average High 2021–2026

    79.3 °F
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