Santiago Canyon Weather Forecast

    • 58
    • 80

    Mostly Sunny

    • 65
    • 86

    Rain Showers Likely

    • 65
    • 83

    Rain Showers Likely

    • 65
    • 87

    Partly Sunny

    • 66
    • 88

    Chance Rain Showers

    • 66
    • 90

    Partly Sunny

    • 64
    • 87

    Mostly Sunny

Today 4 Sep Orange County Inland

Mostly sunny. Highs 79 to 83. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 4 Sep Orange County Inland

Mostly clear. Lows 57 to 64. Areas of Winds southwest to 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Santiago Canyon Temperature Statistics

September Temperature

John Wayne-Orange County Airport (10.6 miles)

  • Lowest 2 September, 2026

    64.9 °F

  • Average September

    72.8 °F

  • Highest 1 September, 2026

    79.6 °F

Climate (2021–2026)

John Wayne-Orange County Airport (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    73.8 °F
Get WillyWeather+ to remove ads