Hacienda Park Weather Forecast

    • 53
    • 83

    Sunny

    • 53
    • 80

    Mostly Sunny

    • 53
    • 75

    Partly Sunny

    • 52
    • 70

    Sunny

    • 52
    • 74

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

Today 11 Dec Los Angeles County San Gabriel Valley

Sunny. Highs in the lower to mid 80s.

Tonight 11 Dec Los Angeles County San Gabriel Valley

Clear. Lows in the lower to mid 50s.

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Hacienda Park Temperature Statistics

December Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 5 December, 2025

    45 °F

  • Average December

    60 °F

  • Highest 8 December, 2025

    81 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (5.6 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66 °F

  • Average High 2020–2025

    76.4 °F
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