Fountain Valley Weather Forecast

    • 68
    • 83

    Increasing Clouds

    • 67
    • 82

    Increasing Clouds

    • 67
    • 82

    Partly Sunny

    • 67
    • 82

    Mostly Sunny

    • 68
    • 82

    Mostly Sunny

    • 69
    • 83

    Mostly Sunny

    • 68
    • 82

    Mostly Sunny

Today 2 Aug Orange County Inland

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 83 to 86 towards the coast to 89 to 93 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 2 Aug Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 63 to 68. Areas of Winds southwest 10 Mph this evening becoming light.

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Fountain Valley Temperature Statistics

August Temperature

John Wayne-Orange County Airport (5 miles)

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  • Average August

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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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