Rancho San Joaquin Weather Forecast

    • 58
    • 78

    Increasing Clouds

    • 57
    • 75

    Partly Sunny

    • 57
    • 74

    Partly Sunny

    • 56
    • 73

    Partly Sunny

    • 56
    • 70

    Partly Sunny

    • 55
    • 69

    Mostly Cloudy

Today 21 May Orange County Coastal

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 70 to 73 at the Beaches to 75 to 79 farther inland and near higher coastal Terrain. Areas of Winds south 10 Mph.

Tonight 21 May Orange County Coastal

Mostly clear in the evening. Becoming mostly cloudy overnight with patchy fog. Lows 55 to 59. Areas of Winds southwest 10 Mph in the evening becoming light.

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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

    66.1 °F

  • Highest 19 May, 2026

    79 °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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