Fullerton Weather Forecast

    • 60
    • 81

    Rain

    • 58
    • 74

    Rain

    • 56
    • 69

    Partly Sunny

    • 55
    • 70

    Mostly Cloudy

    • 51
    • 67

    Rain Likely

    • 49
    • 65

    Mostly Sunny

Today 12 Nov Los Angeles County San Gabriel Valley

Sunny. Highs in the upper 70s to mid 80s.

Tonight 12 Nov Los Angeles County San Gabriel Valley

Partly cloudy in the Evening, becoming mostly cloudy with a 30 percent chance of Showers after midnight. Lows in the mid 50s to lower 60s.

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Fullerton Temperature Statistics

November Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 2 November, 2026

    52.6 °F

  • Average November

    69.7 °F

  • Highest 8 November, 2026

    88 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    57.3 °F

  • Average 2021–2026

    66.9 °F

  • Average High 2021–2026

    77.1 °F
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