Brea Weather Forecast

    • 66
    • 88

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 66
    • 88

    Mostly Sunny

Today 5 Aug Orange County Inland

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 81 to 84 towards the coast to 87 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 5 Aug Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 61 to 68. Areas of Winds southwest to 10 Mph this evening becoming light.

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Brea Temperature Statistics

August Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 1 August, 2026

    68.6 °F

  • Average August

    79.7 °F

  • Highest 1 August, 2026

    92.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.5 °F

  • Average High 2021–2026

    76.8 °F
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