Hacienda Park Weather Forecast

    • 48
    • 71

    Becoming Sunny

    • 49
    • 73

    Partly Sunny

    • 50
    • 71

    Partly Sunny

    • 53
    • 75

    Mostly Sunny

    • 55
    • 78

    Partly Sunny

    • 55
    • 78

    Mostly Cloudy

Today 26 Jan Los Angeles County San Gabriel Valley

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

Tonight 26 Jan Los Angeles County San Gabriel Valley

Mostly clear. Lows in the mid 40s to around 50.

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Hacienda Park Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 10 January, 2026

    39.7 °F

  • Average January

    61.4 °F

  • Highest 14 January, 2026

    85.6 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    76.4 °F
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