Monarch Beach Weather Forecast
- 66
- 74
Patchy Fog
- 67
- 79
Patchy Fog
- 68
- 77
Patchy Fog
- 68
- 78
Partly Sunny
- 67
- 77
Partly Sunny
Today 15 Sep Orange County Coastal
Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 73 to 77 at the Beaches to 79 to 84 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph this afternoon.
Tonight 15 Sep Orange County Coastal
Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 63 to 66. Areas of Winds southwest to 10 Mph in the evening becoming light.
Monarch Beach Temperature Statistics
September Temperature
John Wayne-Orange County Airport (15.5 miles)
Lowest 12 September, 2025
64.9 °FAverage September
72.8 °FHighest 3 September, 2025
86 °F
Climate (2020–Present)
John Wayne-Orange County Airport (15.5 miles)
Average Low 2020–2025
58.7 °FAverage 2020–2025
65.7 °FAverage High 2020–2025
73.6 °F