Santiago Park Weather Forecast

    • 69
    • 88

    Increasing Clouds

    • 71
    • 91

    Partly Sunny

    • 67
    • 86

    Partly Sunny

    • 66
    • 81

    Mostly Sunny

    • 69
    • 87

    Mostly Sunny

    • 69
    • 88

    Mostly Sunny

    • 68
    • 88

    Mostly Sunny

Today 25 Sep Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 85 to 88.

Tonight 25 Sep Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 65 to 69. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Real-Time

Santiago Park Temperature Statistics

September Temperature

John Wayne-Orange County Airport (6.2 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    76.4 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (6.2 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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