Los Nietos Park Weather Forecast

    • 57
    • 77

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 57
    • 80

    Mostly Sunny

    • 57
    • 76

    Patchy Fog

    • 58
    • 78

    Mostly Sunny

Today 16 Oct Los Angeles County San Gabriel Valley

Sunny. Highs in the mid 70s.

Tonight 16 Oct Los Angeles County San Gabriel Valley

Clear. Lows in the lower to mid 50s.

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Los Nietos Park Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (7.5 miles)

  • Lowest 14 October, 2025

    55.9 °F

  • Average October

    67.5 °F

  • Highest 10 October, 2025

    86 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (7.5 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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