Willow Park Weather Forecast

    • 50
    • 76

    Increasing Clouds

    • 50
    • 76

    Partly Sunny

    • 52
    • 71

    Mostly Cloudy

    • 52
    • 69

    Mostly Cloudy

    • 50
    • 68

    Partly Sunny

    • 49
    • 72

    Partly Sunny

    • 50
    • 74

    Partly Sunny

Today 19 Jan Orange County Inland

Mostly sunny. Highs around 74 towards the coast to 75 to 79 farther inland. Light Winds.

Tonight 19 Jan Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 50 to 54. Areas of Winds east to 10 Mph.

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  • Temperature Real-Time

Willow Park Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 9 January, 2026

    42.1 °F

  • Average January

    62.5 °F

  • Highest 14 January, 2026

    84.9 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    76.4 °F
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