Ralph B Clark Regional Park Weather Forecast

    • 69
    • 91

    Mostly Sunny

    • 69
    • 91

    Mostly Sunny

    • 69
    • 89

    Partly Sunny

    • 68
    • 88

    Partly Sunny

    • 68
    • 86

    Partly Sunny

    • 68
    • 85

    Mostly Sunny

    • 67
    • 84

    Mostly Sunny

Today 7 Aug Orange County Inland

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

Tonight 7 Aug Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 63 to 69. Areas of Winds southwest to 10 Mph this evening becoming light.

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Ralph B Clark Regional Park Temperature Statistics

August Temperature

Fullerton, Fullerton Municipal Airport (1.2 miles)

  • Lowest 5 August, 2026

    66.9 °F

  • Average August

    79 °F

  • Highest 1 August, 2026

    92.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (1.2 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.5 °F

  • Average High 2021–2026

    76.8 °F
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