Rancho Mira Loma Park Weather Forecast

    • 57
    • 85

    Becoming Sunny

    • 59
    • 87

    Mostly Sunny

    • 58
    • 88

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 31 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 82 to 87. Light Winds becoming west to 10 Mph this afternoon.

Tonight 31 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 52 to 56 in wind Sheltered Areas to 55 to 61 in warmer Locations. Areas of Winds west to 10 Mph in the evening becoming light.

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Rancho Mira Loma Park Temperature Statistics

October Temperature

Ontario International Airport (3.7 miles)

  • Lowest 16 October, 2025

    53.1 °F

  • Average October

    67.4 °F

  • Highest 28 October, 2025

    96.1 °F

Climate (2020–Present)

Ontario International Airport (3.7 miles)

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  • Average Low 2020–2025

    55.4 °F

  • Average 2020–2025

    66.5 °F

  • Average High 2020–2025

    78.9 °F
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