Rancho San Joaquin Weather Forecast

    • 72
    • 93

    Sunny

    • 69
    • 87

    Mostly Sunny

    • 66
    • 81

    Mostly Sunny

    • 65
    • 80

    Mostly Sunny

    • 63
    • 79

    Mostly Sunny

    • 62
    • 78

    Mostly Sunny

Today 10 Sep Orange County Coastal

Mostly sunny. Highs 82 to 86 at the Beaches to 89 to 94 farther inland and near higher coastal Terrain. Areas of Winds south 10 Mph.

Tonight 10 Sep Orange County Coastal

Mostly clear. Lows 69 to 72. Areas of Winds southeast 10 to 15 Mph.

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  • Temperature Real-Time

Rancho San Joaquin Temperature Statistics

September Temperature

John Wayne-Orange County Airport (1.9 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    74.6 °F

  • Highest 7 September, 2026

    91.9 °F

Climate (2021–2026)

John Wayne-Orange County Airport (1.9 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    73.8 °F
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