Alta Loma Weather Forecast

    • 52
    • 68

    Mostly Cloudy

    • 54
    • 70

    Mostly Cloudy

    • 49
    • 59

    Rain

    • 50
    • 67

    Sunny

    • 55
    • 75

    Sunny

    • 57
    • 82

    Mostly Sunny

Today 23 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog in the morning. Mostly cloudy with patchy drizzle and slight chance of rain in the Morning, then partly cloudy in the afternoon. Highs 66 to 71. Light Winds. Chance of measurable precipitation 20 percent.

Tonight 23 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Patchy fog overnight. Lows 47 to 53. Light Winds.

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Alta Loma Temperature Statistics

October Temperature

Ontario International Airport (4.3 miles)

  • Lowest 19 October, 2021

    50 °F
  • Average October

    69.4 °F
  • Highest 3 October, 2021

    98.1 °F

Climate (2010–Present)

Ontario International Airport (4.3 miles)

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  • Average Low 2010–Present

    56.9 °F
  • Average 2010–Present

    67.2 °F
  • Average High 2010–Present

    80.3 °F
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