Willow Park Weather Forecast

    • 67
    • 86

    Decreasing Clouds

    • 69
    • 91

    Mostly Sunny

    • 71
    • 88

    Mostly Cloudy

    • 70
    • 86

    Chance Rain Showers

    • 69
    • 87

    Chance Rain Showers

    • 67
    • 85

    Partly Sunny

Today 15 Sep Orange County Inland

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs 81 to 85 towards the coast to 89 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 15 Sep Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 63 to 67. Light Winds.

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Willow Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 11 September, 2025

    64.9 °F

  • Average September

    75.1 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (4.3 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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