Rancho Mira Loma Park Weather Forecast

    • 55
    • 66

    Mostly Cloudy

    • 54
    • 74

    Decreasing Clouds

    • 60
    • 85

    Mostly Sunny

    • 64
    • 91

    Mostly Sunny

    • 65
    • 96

    Mostly Sunny

    • 64
    • 95

    Partly Sunny

    • 60
    • 89

    Partly Sunny

Today 17 May San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy with patchy drizzle this Morning, then partly cloudy this afternoon. Patchy fog. Highs 64 to 69. Areas of Winds south 10 to 15 Mph. Gusts to 25 Mph this afternoon.

Tonight 17 May San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy with a slight chance of Showers. Patchy fog. Lows 44 to 53. Areas of Winds southwest 10 to 15 Mph with Gusts to 30 Mph becoming south overnight. Chance of measurable precipitation 20 percent.

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Rancho Mira Loma Park Temperature Statistics

May Temperature

Ontario International Airport (3.7 miles)

  • Lowest 4 May, 2025

    53.7 °F

  • Average May

    67.5 °F

  • Highest 10 May, 2025

    103.6 °F

Climate (2020–Present)

Ontario International Airport (3.7 miles)

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  • Average Low 2020–2025

    55.6 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    79.2 °F
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