Tustin Weather Forecast

    • 61
    • 82

    Patchy Fog

    • 60
    • 81

    Patchy Fog

    • 62
    • 85

    Mostly Sunny

    • 64
    • 92

    Sunny

    • 66
    • 97

    Hot

    • 66
    • 96

    Sunny

    • 66
    • 95

    Sunny

Today 25 Sep Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 77 to 82 towards the coast to 84 farther inland. Light Winds.

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Tustin Temperature Statistics

September Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 11 September, 2020

    61 °F
  • Average September

    73.1 °F
  • Highest 5 September, 2020

    102.9 °F

Climate (2010–Present)

John Wayne-Orange County Airport (5 miles)

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  • Average Low 2010–Present

    59.2 °F
  • Average 2010–Present

    65.4 °F
  • Average High 2010–Present

    73.7 °F
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