Tustin Weather Forecast

    • 55
    • 65

    Rain Showers

    • 56
    • 67

    Mostly Cloudy

    • 55
    • 67

    Rain Showers Likely

    • 54
    • 65

    Rain Showers Likely

    • 52
    • 65

    Chance Rain Showers

    • 48
    • 65

    Chance Rain Showers

Today 1 Jan Orange County Inland

Partly cloudy. A chance of Showers. Lows 50 to 55. Light Winds. Chance of measurable precipitation 30 percent.

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Tustin Temperature Statistics

January Temperature

John Wayne-Orange County Airport (5 miles)

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  • Average January

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Climate (2021–Present)

John Wayne-Orange County Airport (5 miles)

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  • Average Low 2021–2025

    58.8 °F

  • Average 2021–2025

    65.6 °F

  • Average High 2021–2025

    73.3 °F
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