Ralph B Clark Regional Park Weather Forecast

    • 69
    • 85

    Slight Chance Rain Showers

    • 68
    • 88

    Mostly Sunny

    • 68
    • 89

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 66
    • 88

    Mostly Sunny

Today 28 Aug Orange County Inland

Cloudy in the morning. Becoming mostly cloudy. A slight chance of Showers. Highs around 84. Light Winds becoming southwest 10 Mph in the afternoon. Chance of measurable precipitation 20 percent.

Tonight 28 Aug Orange County Inland

Partly cloudy with a slight chance of Showers in the Evening, then mostly clear overnight. Lows 64 to 69. Light Winds. Chance of measurable precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ralph B Clark Regional Park Temperature Statistics

August Temperature

Fullerton, Fullerton Municipal Airport (1.2 miles)

  • Lowest 3 August, 2025

    63.6 °F

  • Average August

    76.2 °F

  • Highest 7 August, 2025

    95.6 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.7 °F
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