Rialto Weather Forecast

    • 68
    • 91

    Patchy Fog

    • 68
    • 92

    Patchy Fog

    • 67
    • 91

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

Today 21 Aug San Bernardino and Riverside County Valleys

Patchy low Clouds and fog in the morning then mostly sunny. Highs 88 to 93. Light Winds becoming west 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 21 Aug San Bernardino and Riverside County Valleys

Mostly clear in the evening then Areas of low Clouds and fog. Lows 60 to 66. Areas of Winds west 15 Mph with Gusts to 25 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rialto Temperature Statistics

August Temperature

Corona Airport (19.3 miles)

  • Lowest 14 August, 2018

    59 °F
  • Average August

    79.5 °F
  • Highest 6 August, 2018

    102 °F

Climate (2010–Present)

Corona Airport (19.3 miles)

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  • Average Low 2010–Present

    53.5 °F
  • Average 2010–Present

    66.9 °F
  • Average High 2010–Present

    79.5 °F
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