Fountain Valley Weather Forecast

    • 62
    • 77

    Increasing Clouds

    • 63
    • 76

    Increasing Clouds

    • 63
    • 75

    Partly Sunny

    • 64
    • 74

    Partly Sunny

    • 64
    • 76

    Partly Sunny

    • 64
    • 78

    Partly Sunny

    • 64
    • 78

    Partly Sunny

Today 30 Jun Orange County Inland

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs around 81 towards the coast to 85 to 88 farther inland. Areas of Winds west to 10 Mph.

Tonight 30 Jun Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 57 to 63. Areas of Winds west 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fountain Valley Temperature Statistics

June Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 3 June, 2025

    60.7 °F

  • Average June

    69.4 °F

  • Highest 1 June, 2025

    87.7 °F

Climate (2020–Present)

John Wayne-Orange County Airport (5 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.6 °F
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