Ontario International Airport Weather Forecast

    • 61
    • 91

    Mostly Sunny

    • 63
    • 91

    Mostly Sunny

    • 66
    • 93

    Mostly Sunny

    • 67
    • 99

    Hot

    • 66
    • 99

    Hot

    • 65
    • 94

    Mostly Sunny

    • 64
    • 91

    Mostly Sunny

Today 6 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 91 to 98. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 6 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 53 to 61. Areas of Winds west to 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Ontario International Airport Temperature Statistics

July Temperature

Ontario International Airport (1.2 miles)

  • Lowest 2 July, 2025

    57.9 °F

  • Average July

    72.6 °F

  • Highest 4 July, 2025

    91.9 °F

Climate (2020–Present)

Ontario International Airport (1.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    79.2 °F
Get WillyWeather+ to remove ads