George Bellis Park Weather Forecast

    • 54
    • 69

    Patchy Fog

    • 52
    • 70

    Mostly Cloudy

    • 54
    • 70

    Mostly Cloudy

    • 58
    • 68

    Rain Showers

    • 57
    • 65

    Rain Showers

    • 55
    • 67

    Rain Showers

    • 52
    • 65

    Rain Showers Likely

Today 20 Dec Orange County Inland

Mostly cloudy this morning. Becoming partly cloudy. Patchy fog this morning. Local visibility one quarter mile or less at Times this morning. Highs around 69. Light Winds.

Tonight 20 Dec Orange County Inland

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 49 to 53. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

George Bellis Park Temperature Statistics

December Temperature

Fullerton, Fullerton Municipal Airport (1.2 miles)

  • Lowest 5 December, 2025

    45 °F

  • Average December

    60.9 °F

  • Highest 10 December, 2025

    84.9 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.4 °F
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