Adults Sports Park Weather Forecast

    • 68
    • 95

    Mostly Sunny

    • 69
    • 96

    Mostly Sunny

    • 70
    • 93

    Partly Sunny

    • 69
    • 90

    Chance Rain Showers

    • 67
    • 90

    Chance Rain Showers

    • 65
    • 89

    Slight Chance Thunderstorms

Today 15 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 92 to 98. Light Winds becoming southwest 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 15 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 63 to 68. Areas of Winds west to 10 Mph in the evening becoming light.

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Adults Sports Park Temperature Statistics

September Temperature

Ontario International Airport (3.7 miles)

  • Lowest 12 September, 2025

    62.1 °F

  • Average September

    78 °F

  • Highest 2 September, 2025

    102 °F

Climate (2020–Present)

Ontario International Airport (3.7 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    79.1 °F
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