Santiago Canyon Weather Forecast

    • 65
    • 85

    Rain Showers Likely

    • 64
    • 83

    Rain Showers Likely

    • 62
    • 81

    Slight Chance Thunderstorms

    • 62
    • 83

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 66
    • 88

    Mostly Sunny

    • 63
    • 87

    Mostly Sunny

Today 17 Sep Orange County Inland

Partly cloudy this morning. Becoming mostly cloudy. Highs around 82 towards the coast to 83 to 86 farther inland. Areas of Winds west to 10 Mph.

Tonight 17 Sep Orange County Inland

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows 64 to 69. Light Winds. Chance of measurable precipitation 50 percent.

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 12 September, 2025

    64.9 °F

  • Average September

    72.6 °F

  • Highest 3 September, 2025

    86 °F

Climate (2020–Present)

John Wayne-Orange County Airport (10.6 miles)

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

  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.7 °F

  • Average High 2020–2025

    73.6 °F
Get WillyWeather+ to remove ads