Rialto Weather Forecast

    • 59
    • 91

    Sunny

    • 58
    • 84

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 59
    • 87

    Partly Sunny

    • 58
    • 85

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

Today 30 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 88 to 93. Light Winds becoming west to 10 Mph this afternoon.

Tonight 30 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 53 to 56 in wind Sheltered Areas to 56 to 61 in warmer Locations. Areas of Winds east to 10 Mph in the evening becoming light.

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Rialto Temperature Statistics

October Temperature

San Bernardino Intl. Airport (6.8 miles)

  • Lowest 16 October, 2025

    46.4 °F

  • Average October

    64.3 °F

  • Highest 10 October, 2025

    95 °F

Climate (2020–Present)

San Bernardino Intl. Airport (6.8 miles)

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  • Average Low 2020–2025

    54 °F

  • Average 2020–2025

    63 °F

  • Average High 2020–2025

    80.2 °F
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