Rancho Cucamonga Weather Forecast

    • 60
    • 87

    Mostly Sunny

    • 61
    • 86

    Mostly Sunny

    • 62
    • 88

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 64
    • 92

    Mostly Sunny

    • 66
    • 93

    Mostly Sunny

    • 70
    • 97

    Mostly Sunny

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

Patchy fog this morning. Mostly sunny. Highs 87 to 95. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

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

Mostly clear. Lows 53 to 60. Areas of Winds west to 10 Mph this evening becoming light.

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Rancho Cucamonga Temperature Statistics

July Temperature

Ontario International Airport (3.7 miles)

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Climate (2020–Present)

Ontario International Airport (3.7 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    79.2 °F
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