Rancho San Joaquin Weather Forecast

    • 58
    • 67

    Slight Chance Rain

    • 59
    • 68

    Partly Sunny

    • 58
    • 71

    Partly Sunny

    • 59
    • 73

    Mostly Sunny

    • 60
    • 77

    Mostly Sunny

    • 61
    • 78

    Mostly Sunny

Today 27 May Orange County Coastal

Partly cloudy. A chance of rain this morning. Highs 63 to 67. Areas of Winds south 10 to 15 Mph with Gusts to 25 Mph. Chance of measurable precipitation 30 percent.

Tonight 27 May Orange County Coastal

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain overnight. Lows 54 to 58. Areas of Winds west 10 to 15 Mph in the evening becoming light. Chance of measurable precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho San Joaquin Temperature Statistics

May Temperature

John Wayne-Orange County Airport (1.9 miles)

  • Lowest 6 May, 2026

    56.6 °F

  • Average May

    66.4 °F

  • Highest 20 May, 2026

    82.7 °F

Climate (2021–Present)

John Wayne-Orange County Airport (1.9 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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