Brea Weather Forecast

    • 55
    • 76

    Sunny

    • 57
    • 80

    Mostly Sunny

    • 58
    • 83

    Mostly Sunny

    • 57
    • 81

    Partly Sunny

    • 56
    • 78

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 56
    • 73

    Partly Sunny

Today 16 Oct Orange County Inland

Sunny. Highs 74 to 77. Light Winds becoming west 10 Mph this afternoon.

Tonight 16 Oct Orange County Inland

Clear. Lows 52 to 57. Areas of Winds west to 10 Mph this evening becoming light.

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Brea Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 14 October, 2025

    55.9 °F

  • Average October

    67.5 °F

  • Highest 10 October, 2025

    86 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (5.6 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    66 °F

  • Average High 2020–2025

    76.5 °F
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