Convention Center Weather Forecast

    • 51
    • 79

    Partly Sunny

    • 51
    • 76

    Becoming Sunny

    • 49
    • 78

    Partly Sunny

    • 51
    • 74

    Mostly Cloudy

    • 51
    • 71

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 52
    • 70

    Mostly Cloudy

Today 18 Jan Orange County Inland

Partly cloudy this morning. Becoming mostly sunny. Highs 77 to 81. Areas of Winds east to 10 Mph with Gusts to 25 Mph this morning becoming light.

Tonight 18 Jan Orange County Inland

Mostly clear this evening. Becoming partly cloudy. Lows 50 to 53. Light Winds.

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Convention Center Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 9 January, 2026

    42.1 °F

  • Average January

    61.9 °F

  • Highest 14 January, 2026

    84.9 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    76.4 °F
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