San Joaquin Hills Weather Forecast

    • 60
    • 72

    Becoming Sunny

    • 61
    • 73

    Partly Sunny

    • 63
    • 76

    Mostly Sunny

    • 62
    • 75

    Partly Sunny

    • 62
    • 74

    Partly Sunny

    • 62
    • 75

    Mostly Sunny

Today 17 Sep Orange County Coastal

Partly cloudy in the morning. Becoming mostly sunny. Highs around 73 at the Beaches to 74 to 77 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 17 Sep Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 59 to 64. Areas of Winds west to 10 Mph in the evening becoming light.

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San Joaquin Hills Temperature Statistics

September Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    78 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (5 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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