Santa Ana River Mouth Weather Forecast

    • 59
    • 74

    Mostly Cloudy

    • 58
    • 75

    Partly Sunny

    • 59
    • 71

    Mostly Cloudy

    • 58
    • 70

    Mostly Cloudy

    • 57
    • 69

    Mostly Cloudy

    • 54
    • 68

    Partly Sunny

Today 28 Mar Orange County Coastal

Patchy fog this morning. Partly cloudy. Warmer. Highs 74 to 78 at the Beaches to 79 to 83 farther inland and near higher coastal Terrain. Areas of Winds northwest 10 to 15 Mph. Gusts to 25 Mph this afternoon.

Tonight 28 Mar Orange County Coastal

Partly cloudy. Lows around 58. Areas of Winds northwest 10 to 15 Mph. Gusts to 25 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santa Ana River Mouth Temperature Statistics

March Temperature

John Wayne-Orange County Airport (6.2 miles)

  • Lowest 6 March, 2026

    52 °F

  • Average March

    68.8 °F

  • Highest 17 March, 2026

    95.6 °F

Climate (2021–Present)

John Wayne-Orange County Airport (6.2 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    65.9 °F

  • Average High 2021–2026

    73.7 °F
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