Brea Weather Forecast

    • 54
    • 74

    Increasing Clouds

    • 54
    • 77

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 55
    • 83

    Partly Sunny

    • 54
    • 76

    Partly Sunny

    • 54
    • 76

    Patchy Fog

Today 13 Dec Orange County Inland

Patchy fog this morning. Partly cloudy. Local visibility one quarter mile or less at Times this morning. Highs around 71 towards the coast to 75 farther inland. Light Winds.

Tonight 13 Dec Orange County Inland

Partly cloudy. Patchy fog. Local visibility one quarter mile or less at Times. Lows 52 to 55. Light Winds.

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Brea Temperature Statistics

December Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 5 December, 2025

    45 °F

  • Average December

    63 °F

  • Highest 10 December, 2025

    84.9 °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

    66.1 °F

  • Average High 2020–2025

    76.5 °F
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