Fontana Weather Forecast

    • 61
    • 83

    Mostly Sunny

    • 60
    • 84

    Sunny

    • 57
    • 79

    Mostly Sunny

    • 55
    • 74

    Chance Rain Showers

    • 54
    • 70

    Partly Sunny

    • 54
    • 69

    Chance Rain Showers

Today 10 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 81 to 87. Areas of Winds east to 10 Mph becoming north 10 Mph this afternoon.

Tonight 10 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 54 to 57 in wind Sheltered Areas to 56 to 61 in warmer Locations. Areas of Winds east to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Temperature Statistics

November Temperature

Ontario International Airport (8.1 miles)

  • Lowest 2 November, 2026

    51.7 °F

  • Average November

    66.5 °F

  • Highest 7 November, 2026

    82.9 °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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