Rancho San Joaquin Weather Forecast

    • 52
    • 68

    Mostly Cloudy

    • 52
    • 67

    Chance Rain Showers

    • 51
    • 65

    Mostly Cloudy

    • 48
    • 66

    Mostly Sunny

    • 47
    • 69

    Partly Sunny

    • 49
    • 70

    Partly Sunny

Today 21 Jan Orange County Coastal

Areas of fog in the morning. Mostly cloudy. Local visibility one quarter mile or less at Times in the morning. Highs 64 to 68. Light Winds.

Tonight 21 Jan Orange County Coastal

Mostly cloudy. Patchy fog overnight. Lows around 52. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho San Joaquin Temperature Statistics

January Temperature

John Wayne-Orange County Airport (1.9 miles)

  • Lowest 8 January, 2026

    48 °F

  • Average January

    61 °F

  • Highest 14 January, 2026

    82 °F

Climate (2021–Present)

John Wayne-Orange County Airport (1.9 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    73.3 °F
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