Santiago Canyon Weather Forecast

    • 51
    • 69

    Decreasing Clouds

    • 57
    • 80

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 60
    • 89

    Mostly Sunny

    • 59
    • 87

    Partly Sunny

    • 56
    • 80

    Partly Sunny

    • 56
    • 76

    Mostly Sunny

Today 18 May Orange County Inland

Mostly cloudy this morning. Becoming partly cloudy. Warmer. Highs 70 to 74. Areas of Winds southeast 10 Mph becoming southwest this afternoon.

Tonight 18 May Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 51 to 56. Areas of Winds southwest 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Santiago Canyon Temperature Statistics

May Temperature

John Wayne-Orange County Airport (10.6 miles)

  • Lowest 4 May, 2025

    56.6 °F

  • Average May

    66 °F

  • Highest 10 May, 2025

    91.7 °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

    65.6 °F

  • Average High 2020–2025

    73.6 °F
Get WillyWeather+ to remove ads