Fountain Valley Weather Forecast

    • 49
    • 77

    Increasing Clouds

    • 48
    • 71

    Mostly Cloudy

    • 47
    • 69

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 50
    • 73

    Partly Sunny

    • 52
    • 74

    Mostly Cloudy

Today 10 Dec Orange County Inland

Mostly sunny. Highs around 77. Areas of Winds east 20 to 30 Mph with Gusts to 45 Mph becoming northeast 10 to 20 Mph with Gusts to 35 Mph this afternoon.

Tonight 10 Dec Orange County Inland

Partly cloudy. Lows 46 to 52. Areas of Winds east 10 to 15 Mph. Gusts to 30 Mph. Becoming 25 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fountain Valley Temperature Statistics

December Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 3 December, 2023

    49.6 °F

  • Average December

    61.6 °F

  • Highest 5 December, 2023

    79.6 °F

Climate (2018–Present)

John Wayne-Orange County Airport (5 miles)

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  • Average Low 2018–2023

    59 °F

  • Average 2018–2023

    65.6 °F

  • Average High 2018–2023

    73.7 °F
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