Pioneer Park Weather Forecast

    • 65
    • 81

    Becoming Sunny

    • 66
    • 85

    Becoming Sunny

    • 66
    • 85

    Mostly Sunny

    • 69
    • 87

    Partly Sunny

    • 70
    • 89

    Mostly Sunny

    • 71
    • 91

    Patchy Fog

    • 71
    • 91

    Patchy Fog

Today 17 Aug Orange County Inland

Partly cloudy this morning. Becoming mostly sunny. Highs around 80 towards the coast to 82 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 17 Aug Orange County Inland

Mostly clear this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 58 to 65. Areas of Winds southwest to 10 Mph this evening becoming light.

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Pioneer Park Temperature Statistics

August Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 3 August, 2025

    63.6 °F

  • Average August

    74.7 °F

  • Highest 7 August, 2025

    95.6 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (6.2 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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