Fullerton Weather Forecast

    • 49
    • 64

    Increasing Clouds

    • 51
    • 60

    Rain Showers

    • 51
    • 63

    Chance Rain Showers

    • 51
    • 67

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 51
    • 70

    Patchy Fog

    • 51
    • 69

    Patchy Fog

Today 19 Nov Orange County Inland

Mostly sunny. Highs 62 to 65. Light Winds becoming west 10 Mph this afternoon.

Tonight 19 Nov Orange County Inland

Mostly clear this Evening, then partly cloudy with a slight chance of Showers overnight. Lows 44 to 51. 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 17 November, 2025

    53.1 °F

  • Average November

    63.7 °F

  • Highest 10 November, 2025

    86 °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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