Rancho San Joaquin Weather Forecast

    • 54
    • 67

    Mostly Cloudy

    • 59
    • 66

    Rain

    • 54
    • 65

    Rain

    • 53
    • 65

    Rain Showers

    • 48
    • 63

    Rain Showers

    • 47
    • 64

    Chance Rain Showers

Today 22 Dec Orange County Coastal

Mostly cloudy with patchy fog in the morning. Becoming partly cloudy. Highs around 64 at the Beaches to 66 to 69 farther inland and near higher coastal Terrain. Light Winds.

Tonight 22 Dec Orange County Coastal

Mostly cloudy. Patchy fog overnight. Lows 52 to 55. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho San Joaquin Temperature Statistics

December Temperature

John Wayne-Orange County Airport (1.9 miles)

  • Lowest 6 December, 2025

    48 °F

  • Average December

    59.6 °F

  • Highest 9 December, 2025

    82 °F

Climate (2020–Present)

John Wayne-Orange County Airport (1.9 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.3 °F
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