Fullerton Weather Forecast

    • 55
    • 75

    Increasing Clouds

    • 55
    • 71

    Partly Sunny

    • 56
    • 74

    Mostly Sunny

    • 57
    • 80

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

Today 4 Nov Orange County Inland

Mostly cloudy with patchy fog and drizzle this Morning, then mostly sunny this afternoon. Local visibility one quarter mile or less at Times this morning. Highs 73 to 76. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 4 Nov Orange County Inland

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers overnight. Patchy fog overnight. Lows 49 to 56. Light Winds. Chance of measurable precipitation 20 percent.

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Fullerton Temperature Statistics

November Temperature

Fullerton, Fullerton Municipal Airport (3.1 miles)

  • Lowest 1 November, 2025

    57.9 °F

  • Average November

    63.1 °F

  • Highest 1 November, 2025

    75 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (3.1 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    66 °F

  • Average High 2020–2025

    76.5 °F
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