Rialto Weather Forecast

    • 49
    • 69

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 49
    • 69

    Partly Sunny

    • 49
    • 68

    Mostly Sunny

    • 50
    • 67

    Partly Sunny

    • 50
    • 64

    Mostly Sunny

Today 11 Dec San Bernardino and Riverside County Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 39 to 47. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rialto Temperature Statistics

December Temperature

Corona Airport (19.3 miles)

  • Lowest 2 December, 2018

    37 °F
  • Average December

    54.7 °F
  • Highest 9 December, 2018

    73 °F

Climate (2010–Present)

Corona Airport (19.3 miles)

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  • Average Low 2010–Present

    53.5 °F
  • Average 2010–Present

    67 °F
  • Average High 2010–Present

    79.6 °F
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