Northwest Weather Forecast

    • 69
    • 88

    Increasing Clouds

    • 67
    • 85

    Partly Sunny

    • 65
    • 83

    Mostly Sunny

    • 64
    • 81

    Mostly Sunny

    • 65
    • 83

    Mostly Sunny

    • 67
    • 87

    Mostly Sunny

Today 12 Sep Orange County Inland

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs 84 to 87 towards the coast to 90 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 12 Sep Orange County Inland

Partly cloudy. Lows 61 to 68. Areas of Winds southwest to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Northwest Temperature Statistics

September Temperature

John Wayne-Orange County Airport (6.8 miles)

  • Lowest 2 September, 2026

    65.6 °F

  • Average September

    77.9 °F

  • Highest 9 September, 2026

    100.9 °F

Climate (2021–2026)

John Wayne-Orange County Airport (6.8 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    73.8 °F
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