Laguna Lake Park Weather Forecast

    • 68
    • 90

    Increasing Clouds

    • 65
    • 87

    Partly Sunny

    • 65
    • 81

    Mostly Sunny

    • 67
    • 87

    Sunny

    • 68
    • 89

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

Today 26 Sep Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 84 to 89 towards the coast to 91 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 26 Sep Orange County Inland

Partly cloudy in the evening. Becoming mostly cloudy. Lows 64 to 69. Light Winds.

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Laguna Lake Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (3.1 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    77.6 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
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