Casa De Santiago Weather Forecast

    • 70
    • 91

    Mostly Sunny

    • 71
    • 93

    Mostly Sunny

    • 72
    • 92

    Mostly Sunny

    • 73
    • 93

    Mostly Sunny

    • 74
    • 95

    Mostly Sunny

    • 73
    • 94

    Mostly Sunny

    • 72
    • 93

    Partly Sunny

Today 21 Aug Orange County Inland

Mostly sunny. Highs 84 to 88 towards the coast to 91 to 94 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 21 Aug Orange County Inland

Mostly clear. Lows 66 to 70. Areas of Winds south to 10 Mph this evening becoming light.

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Casa De Santiago Temperature Statistics

August Temperature

John Wayne-Orange County Airport (6.2 miles)

  • Lowest 19 August, 2026

    68 °F

  • Average August

    76.5 °F

  • Highest 9 August, 2026

    89.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (6.2 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    73.7 °F
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