Frontier Park Weather Forecast

    • 46
    • 71

    Sunny

    • 47
    • 73

    Sunny

    • 58
    • 78

    Sunny

    • 58
    • 81

    Mostly Sunny

    • 57
    • 80

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

Today 6 Dec Los Angeles County Inland Coast including Downtown Los Angeles

Sunny. Highs around 70.

Tonight 6 Dec Los Angeles County Inland Coast including Downtown Los Angeles

Clear. Lows in the mid 40s to mid 50s.

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Frontier Park Temperature Statistics

December Temperature

Fullerton, Fullerton Municipal Airport (3.7 miles)

  • Lowest 2 December, 2025

    48 °F

  • Average December

    59.3 °F

  • Highest 1 December, 2025

    72 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (3.7 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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