Fontana Weather Forecast

    • 55
    • 73

    Mostly Sunny

    • 57
    • 77

    Mostly Sunny

    • 58
    • 79

    Sunny

    • 59
    • 82

    Sunny

    • 60
    • 83

    Partly Sunny

    • 59
    • 81

    Partly Sunny

Today 4 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog in the morning. Mostly sunny. Highs 70 to 75. Light Winds.

Tonight 4 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 51 to 55. Light Winds.

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Fontana Temperature Statistics

November Temperature

Ontario International Airport (8.1 miles)

  • Lowest 1 November, 2026

    55.9 °F

  • Average November

    61.4 °F

  • Highest 1 November, 2026

    68 °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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