Tustin Weather Forecast

    • 66
    • 83

    Becoming Sunny

    • 67
    • 84

    Mostly Sunny

    • 66
    • 85

    Partly Sunny

    • 66
    • 82

    Partly Sunny

    • 67
    • 81

    Mostly Cloudy

    • 68
    • 82

    Mostly Cloudy

Today 7 Jul Orange County Inland

Partly cloudy in the morning. Becoming sunny. Highs 78 to 82 towards the coast to 83 to 86 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 7 Jul Orange County Inland

Clear in the evening. Becoming partly cloudy. Lows 58 to 66. Areas of Winds southwest 10 Mph in the evening becoming light.

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Tustin Temperature Statistics

July Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 3 July, 2026

    62.7 °F

  • Average July

    70.1 °F

  • Highest 4 July, 2026

    79 °F

Climate (2021–2026)

John Wayne-Orange County Airport (5 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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