Emerald Bay Weather Forecast

    • 68
    • 75

    Patchy Fog

    • 67
    • 76

    Decreasing Clouds

    • 68
    • 76

    Mostly Cloudy

    • 68
    • 75

    Mostly Cloudy

    • 67
    • 70

    Partly Sunny

    • 68
    • 71

    Partly Sunny

    • 68
    • 72

    Partly Sunny

Today 17 Sep Orange County Coastal

Partly cloudy. Highs 75 to 78 at the Beaches to 79 to 83 farther inland and near higher coastal Terrain.

Tonight 17 Sep Orange County Coastal

Mostly clear this evening. Becoming partly cloudy. Lows 60 to 64. Areas of Winds west 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Emerald Bay Temperature Statistics

September Temperature

John Wayne-Orange County Airport (9.3 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    77.6 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (9.3 miles)

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  • Average Low 2021–2026

    59.1 °F

  • Average 2021–2026

    66.2 °F

  • Average High 2021–2026

    73.8 °F
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