Aliso Beach County Park Weather Forecast

    • 64
    • 72

    Increasing Clouds

    • 63
    • 71

    Mostly Cloudy

    • 62
    • 70

    Mostly Cloudy

    • 62
    • 70

    Mostly Cloudy

    • 63
    • 70

    Mostly Cloudy

    • 63
    • 70

    Mostly Cloudy

    • 63
    • 72

    Mostly Cloudy

Today 9 Sep Orange County Coastal

Mostly cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Highs 71 to 74 at the Beaches to 75 to 79 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 9 Sep Orange County Coastal

Partly cloudy this evening. Becoming cloudy. Lows 62 to 65. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph this evening.

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Aliso Beach County Park Temperature Statistics

September Temperature

John Wayne-Orange County Airport (13 miles)

  • Lowest 5 September, 2025

    66.9 °F

  • Average September

    74.7 °F

  • Highest 3 September, 2025

    86 °F

Climate (2020–Present)

John Wayne-Orange County Airport (13 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.7 °F

  • Average High 2020–2025

    73.6 °F
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