Santa Ana River Mouth Weather Forecast

    • 68
    • 77

    Increasing Clouds

    • 69
    • 77

    Partly Sunny

    • 69
    • 77

    Partly Sunny

    • 69
    • 76

    Partly Sunny

    • 70
    • 77

    Mostly Sunny

    • 69
    • 77

    Partly Sunny

Today 4 Aug Orange County Coastal

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 75 to 78 at the Beaches to 80 to 85 farther inland and near higher coastal Terrain. Light Winds becoming south 10 Mph this afternoon.

Tonight 4 Aug Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 64 to 68. Areas of Winds west 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santa Ana River Mouth Temperature Statistics

August Temperature

John Wayne-Orange County Airport (6.2 miles)

  • Lowest 1 August, 2026

    70 °F

  • Average August

    74.4 °F

  • Highest 1 August, 2026

    81 °F

Climate (2021–2026)

John Wayne-Orange County Airport (6.2 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66 °F

  • Average High 2021–2026

    73.7 °F
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