Loma Norte Park Weather Forecast

    • 63
    • 85

    Increasing Clouds

    • 62
    • 81

    Mostly Sunny

    • 61
    • 80

    Mostly Sunny

    • 61
    • 81

    Sunny

    • 62
    • 83

    Sunny

    • 62
    • 85

    Mostly Sunny

Today 14 Sep Orange County Inland

Partly cloudy with patchy fog this morning. Becoming sunny. Highs around 81 towards the coast to 83 to 86 farther inland. Areas of Winds south 10 Mph.

Tonight 14 Sep Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 58 to 65. Areas of Winds south 10 Mph in the evening becoming light.

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Loma Norte Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (5.6 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    79.6 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (5.6 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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