Ontario Weather Forecast

    • 62
    • 85

    Mostly Sunny

    • 60
    • 85

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 59
    • 85

    Sunny

    • 58
    • 81

    Mostly Sunny

    • 57
    • 77

    Slight Chance Rain Showers

Today 8 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 81 to 88. Areas of Winds east 10 to 20 Mph with Gusts to 30 Mph.

Tonight 8 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 56 to 60. Areas of Winds east 10 to 15 Mph with Gusts to 25 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Ontario Temperature Statistics

November Temperature

Ontario International Airport (3.7 miles)

  • Lowest 2 November, 2026

    51.7 °F

  • Average November

    65.1 °F

  • Highest 6 November, 2026

    81 °F

Climate (2021–2026)

Ontario International Airport (3.7 miles)

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

  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    79.4 °F
Get WillyWeather+ to remove ads