Fullerton Weather Forecast

    • 63
    • 79

    Becoming Sunny

    • 65
    • 81

    Patchy Fog

    • 64
    • 84

    Patchy Fog

    • 65
    • 86

    Patchy Fog

    • 65
    • 87

    Patchy Fog

    • 67
    • 89

    Mostly Sunny

Today 1 Oct Orange County Inland

Patchy fog in the morning. Mostly cloudy with patchy drizzle in the Morning, then mostly sunny in the afternoon. Highs in the upper 70s. Light Winds.

Tonight 1 Oct Orange County Inland

Mostly clear in the evening. Becoming mostly cloudy. Patchy fog overnight. Lows in the lower 60s. Light Winds.

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Fullerton Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (3.1 miles)

  • Lowest

  • Average October

  • Highest

Climate (2010–Present)

Fullerton, Fullerton Municipal Airport (3.1 miles)

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  • Average Low 2010–Present

    57.5 °F
  • Average 2010–Present

    66.1 °F
  • Average High 2010–Present

    77.3 °F
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