Fontana Weather Forecast

    • 52
    • 67

    Rain Showers Likely

    • 55
    • 74

    Mostly Sunny

    • 54
    • 74

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

Today 1 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy with rain this Morning, then partly cloudy with a chance of Showers this afternoon. Highs 63 to 70. Light Winds becoming west 10 Mph this afternoon.

Tonight 1 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with a slight chance of Showers in the Evening, then mostly clear overnight. Cooler. Lows 46 to 52. Areas of Winds southwest to 10 Mph in the evening becoming light. Chance of measurable precipitation 20 percent.

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Fontana Temperature Statistics

November Temperature

Ontario International Airport (8.1 miles)

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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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