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.
Mission Viejo Temperature Statistics
July Temperature
John Wayne-Orange County Airport (12.4 miles)
Lowest 2 July, 2025
61.6 °FAverage July
70.8 °FHighest 8 July, 2025
80.7 °F
Climate (2020–Present)
John Wayne-Orange County Airport (12.4 miles)
Average Low 2020–2025
58.7 °FAverage 2020–2025
65.6 °FAverage High 2020–2025
73.6 °F