Fontana Weather Forecast

    • 55
    • 68

    Rain Showers

    • 51
    • 66

    Chance Rain Showers

    • 54
    • 71

    Partly Sunny

    • 51
    • 66

    Rain Showers

    • 46
    • 62

    Chance Rain Showers

    • 48
    • 63

    Partly Sunny

Today 13 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy with Showers this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs 65 to 71. Areas of Winds south to 10 Mph becoming southwest this afternoon.

Tonight 13 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Showers likely. Lows 49 to 54. Areas of Winds south to 10 Mph. Chance of measurable precipitation 70 percent.

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Fontana Temperature Statistics

November Temperature

Ontario International Airport (8.1 miles)

  • Lowest 2 November, 2026

    51.7 °F

  • Average November

    67.5 °F

  • Highest 8 November, 2026

    86.6 °F

Climate (2021–2026)

Ontario International Airport (8.1 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    79.4 °F
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