Fountain Valley Weather Forecast

    • 68
    • 82

    Increasing Clouds

    • 68
    • 82

    Partly Sunny

    • 68
    • 82

    Partly Sunny

    • 68
    • 80

    Mostly Sunny

    • 68
    • 82

    Mostly Sunny

    • 69
    • 84

    Mostly Sunny

    • 70
    • 85

    Mostly Sunny

Today 26 Jul Orange County Inland

Partly cloudy. A slight chance of Showers this morning. Highs 85 to 88 towards the coast to 90 to 93 farther inland. Light Winds becoming southwest 10 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 26 Jul Orange County Inland

Partly cloudy. Lows 63 to 69. Areas of Winds southwest 10 Mph this evening becoming light.

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Fountain Valley Temperature Statistics

July Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 3 July, 2026

    62.7 °F

  • Average July

    73.8 °F

  • Highest 15 July, 2026

    86.6 °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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