Guadalupe Park Weather Forecast

    • 57
    • 76

    Mostly Cloudy

    • 56
    • 75

    Partly Sunny

    • 60
    • 81

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

Today 25 Oct Orange County Inland

Patchy fog this morning. Partly cloudy. Highs 74 to 77. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 25 Oct Orange County Inland

Partly cloudy in the evening. Becoming mostly cloudy. Patchy fog in the evening. Lows 52 to 58. Light Winds.

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Guadalupe Park Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (3.7 miles)

  • Lowest 16 October, 2025

    51.1 °F

  • Average October

    66.9 °F

  • Highest 18 October, 2025

    88 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    66 °F

  • Average High 2020–2025

    76.5 °F
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