Hillcrest Park Weather Forecast

    • 57
    • 80

    Increasing Clouds

    • 57
    • 79

    Partly Sunny

    • 58
    • 82

    Mostly Sunny

    • 59
    • 84

    Sunny

    • 59
    • 86

    Mostly Sunny

    • 58
    • 82

    Partly Sunny

    • 57
    • 79

    Partly Sunny

Today 7 May Orange County Inland

Partly cloudy this morning. Becoming mostly sunny. Highs 74 to 77 towards the coast to 80 farther inland. Areas of Winds southwest to 10 Mph.

Tonight 7 May Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 53 to 57. Areas of Winds south 10 Mph this evening becoming light.

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Hillcrest Park Temperature Statistics

May Temperature

Fullerton, Fullerton Municipal Airport (3.7 miles)

  • Lowest 5 May, 2026

    55.9 °F

  • Average May

    64.9 °F

  • Highest 1 May, 2026

    75.7 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    76.8 °F
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