Buena Park Weather Forecast

    • 67
    • 83

    Slight Chance Thunderstorms

    • 66
    • 85

    Partly Sunny

    • 67
    • 80

    Mostly Cloudy

    • 68
    • 86

    Partly Sunny

    • 68
    • 85

    Partly Sunny

    • 66
    • 86

    Partly Sunny

Today 19 Sep Orange County Inland

Partly cloudy with a slight chance of Showers and Thunderstorms this Morning, then mostly sunny this afternoon. Highs 79 to 82 towards the coast to 83 farther inland. Light Winds becoming southwest 10 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 19 Sep Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 61 to 66. Areas of Winds west 10 Mph in the evening becoming light.

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Buena Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (0.6 miles)

  • Lowest 11 September, 2025

    64.9 °F

  • Average September

    74.6 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (0.6 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.7 °F
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