Irvine Weather Forecast

    • 66
    • 85

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

    • 74
    • 97

    Hot

    • 75
    • 99

    Hot

    • 76
    • 97

    Hot

    • 75
    • 96

    Mostly Sunny

Today 30 Sep Orange County Inland

Partly cloudy this morning. Becoming sunny. Highs around 82 towards the coast to 84 to 87 farther inland. Areas of Winds south 10 Mph.

Tonight 30 Sep Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 60 to 65. Areas of Winds south to 10 Mph in the evening becoming light.

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Irvine Temperature Statistics

September Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    76.4 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2021–2026

    59.1 °F

  • Average 2021–2026

    66.2 °F

  • Average High 2021–2026

    73.8 °F
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