Gilbert Park Weather Forecast

    • 66
    • 82

    Becoming Sunny

    • 68
    • 89

    Partly Sunny

    • 69
    • 88

    Mostly Sunny

    • 70
    • 90

    Partly Sunny

    • 68
    • 90

    Mostly Sunny

    • 66
    • 85

    Mostly Sunny

Today 22 Sep Orange County Inland

Partly cloudy in the morning. Becoming sunny. Highs 80 to 83. Light Winds becoming west 10 Mph in the afternoon.

Tonight 22 Sep Orange County Inland

Mostly clear. Lows 61 to 66. Areas of Winds southwest to 10 Mph in the evening becoming light.

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Gilbert Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (1.2 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    78.1 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (1.2 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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