Mission Viejo Weather Forecast

    • 63
    • 76

    Gradual Clearing

    • 62
    • 77

    Mostly Cloudy

    • 61
    • 78

    Partly Sunny

    • 61
    • 79

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 61
    • 80

    Partly Sunny

Today 20 Jul Orange County Inland

Cloudy this morning. Becoming mostly sunny. Highs around 75 towards the coast to 80 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 20 Jul Orange County Inland

Partly cloudy in the evening. Becoming cloudy. Lows 58 to 64. Areas of Winds south 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mission Viejo Temperature Statistics

July Temperature

John Wayne-Orange County Airport (12.4 miles)

  • Lowest 2 July, 2025

    61.6 °F

  • Average July

    70.8 °F

  • Highest 8 July, 2025

    80.7 °F

Climate (2020–Present)

John Wayne-Orange County Airport (12.4 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.6 °F
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