Fullerton Weather Forecast

    • 57
    • 70

    Mostly Cloudy

    • 53
    • 67

    Chance Rain

    • 47
    • 72

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

    • 49
    • 76

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

Today 24 Oct Los Angeles County San Gabriel Valley

Mostly cloudy. Patchy drizzle in the morning. Highs in the upper 60s to mid 70s.

Tonight 24 Oct Los Angeles County San Gabriel Valley

Mostly cloudy. A 20 percent chance of rain after midnight. Lows in the 50s to around 60.

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Fullerton Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 12 October, 2020

    61 °F

  • Average October

    74.7 °F

  • Highest 1 October, 2020

    100 °F

Climate (2010–Present)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2010–Present

    58.1 °F

  • Average 2010–Present

    66.5 °F

  • Average High 2010–Present

    77.6 °F
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