Fullerton Weather Forecast

    • 52
    • 62

    Rain Showers

    • 49
    • 66

    Partly Sunny

    • 49
    • 66

    Mostly Sunny

    • 48
    • 65

    Mostly Sunny

    • 51
    • 70

    Patchy Fog

    • 52
    • 73

    Patchy Fog

    • 52
    • 73

    Mostly Sunny

Today 21 Nov Los Angeles County San Gabriel Valley

Showers in the Morning, then a chance of Showers in the afternoon. Highs in the upper 50s to mid 60s.

Tonight 21 Nov Los Angeles County San Gabriel Valley

Partly cloudy with a 20 percent chance of Showers. Lows in the mid 40s to lower 50s. Northeast Winds around 15 Mph.

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Fullerton Temperature Statistics

November Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 19 November, 2025

    46.9 °F

  • Average November

    62.7 °F

  • Highest 10 November, 2025

    86 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (6.2 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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