La Mirada Creek Park Weather Forecast

    • 56
    • 65

    Gradual Clearing

    • 55
    • 81

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

    • 54
    • 71

    Partly Sunny

    • 54
    • 72

    Mostly Cloudy

    • 53
    • 71

    Mostly Cloudy

Today 17 Dec Los Angeles County San Gabriel Valley

Low Clouds and fog in the morning then sunny. Fog locally dense with visibility one quarter mile or less. Highs in the mid 60s to mid 70s.

Tonight 17 Dec Los Angeles County San Gabriel Valley

Mostly clear. Lows in the mid to upper 50s.

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La Mirada Creek Park Temperature Statistics

December Temperature

Fullerton, Fullerton Municipal Airport (3.1 miles)

  • Lowest 5 December, 2025

    45 °F

  • Average December

    61.4 °F

  • Highest 10 December, 2025

    84.9 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (3.1 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.4 °F
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