Rancho Fontana Weather Forecast

    • 56
    • 64

    Rain Showers

    • 50
    • 63

    Rain Showers

    • 50
    • 59

    Chance Rain Showers

    • 46
    • 59

    Chance Rain Showers

    • 44
    • 58

    Chance Rain Showers

    • 46
    • 61

    Chance Rain Showers

Today 14 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Showers likely. Cooler. Highs 63 to 67. Areas of Winds south to 10 Mph. Chance of measurable precipitation 70 percent.

Tonight 14 Nov San Bernardino and Riverside County Valleys-The Inland Empire

A slight chance of Thunderstorms. Showers likely in the Evening, then Showers overnight. Locally heavy rainfall possible overnight. Lows 53 to 57. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho Fontana Temperature Statistics

November Temperature

Ontario International Airport (7.5 miles)

  • Lowest 2 November, 2025

    53.1 °F

  • Average November

    67 °F

  • Highest 10 November, 2025

    93 °F

Climate (2020–Present)

Ontario International Airport (7.5 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    79 °F
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