Santiago Canyon Weather Forecast

    • 65
    • 90

    Partly Sunny

    • 66
    • 91

    Mostly Sunny

    • 66
    • 92

    Mostly Sunny

    • 65
    • 91

    Mostly Sunny

    • 66
    • 92

    Mostly Sunny

    • 68
    • 93

    Mostly Sunny

Today 20 Aug Orange County Inland

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 84 to 87 towards the coast to 90 to 93 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 20 Aug Orange County Inland

Partly cloudy in the evening. Becoming mostly clear. Lows 64 to 69. Areas of Winds south to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santiago Canyon Temperature Statistics

August Temperature

John Wayne-Orange County Airport (10.6 miles)

  • Lowest 17 August, 2026

    68 °F

  • Average August

    76.3 °F

  • Highest 9 August, 2026

    89.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (10.6 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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