La Bonita Park Weather Forecast

    • 63
    • 79

    Becoming Sunny

    • 63
    • 80

    Increasing Clouds

    • 66
    • 83

    Partly Sunny

    • 65
    • 81

    Mostly Cloudy

    • 63
    • 79

    Mostly Sunny

    • 64
    • 81

    Mostly Sunny

    • 65
    • 85

    Mostly Sunny

Today 17 Sep Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 81 to 84 towards the coast to 86 farther inland.

Tonight 17 Sep Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 55 to 64. Areas of Winds west to 10 Mph this evening becoming light.

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La Bonita Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    78.8 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (4.3 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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