Santiago Canyon Weather Forecast

    • 64
    • 90

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

    • 65
    • 88

    Partly Sunny

    • 64
    • 88

    Partly Sunny

    • 61
    • 83

    Partly Sunny

    • 59
    • 80

    Mostly Sunny

Today 23 Sep Orange County Inland

Partly cloudy in the morning. Becoming sunny. Warmer. Highs 85 to 88 towards the coast to 89 to 92 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 23 Sep Orange County Inland

Mostly clear in the evening. Becoming partly cloudy. Lows 64 to 68. Areas of Winds south to 10 Mph in the evening becoming light.

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Santiago Canyon Temperature Statistics

September Temperature

John Wayne-Orange County Airport (10.6 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    76.7 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (10.6 miles)

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  • Average Low 2021–2026

    59.1 °F

  • Average 2021–2026

    66.2 °F

  • Average High 2021–2026

    73.8 °F
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