Mission Viejo Weather Forecast

    • 53
    • 73

    Partly Sunny

    • 54
    • 76

    Mostly Sunny

    • 55
    • 78

    Partly Sunny

    • 54
    • 75

    Partly Sunny

    • 55
    • 76

    Patchy Fog

    • 53
    • 74

    Patchy Fog

Today 14 Dec Orange County Inland

Patchy fog this morning. Partly cloudy. Local visibility one quarter mile or less at Times this morning. Highs 72 to 75. Light Winds.

Tonight 14 Dec Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Local visibility one quarter mile or less at Times overnight. Lows around 52. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mission Viejo Temperature Statistics

December Temperature

John Wayne-Orange County Airport (12.4 miles)

  • Lowest 6 December, 2025

    48 °F

  • Average December

    60.8 °F

  • Highest 9 December, 2025

    82 °F

Climate (2020–Present)

John Wayne-Orange County Airport (12.4 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

    73.4 °F
Get WillyWeather+ to remove ads