Convention Center Weather Forecast

    • 61
    • 82

    Increasing Clouds

    • 59
    • 78

    Partly Sunny

    • 58
    • 75

    Partly Sunny

    • 57
    • 76

    Partly Sunny

    • 57
    • 76

    Partly Sunny

    • 59
    • 73

    Partly Sunny

Today 20 May Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 80 to 83 towards the coast to 85 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 20 May Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 56 to 61. Areas of Winds south 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Convention Center Temperature Statistics

May Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 6 May, 2026

    55.7 °F

  • Average May

    67 °F

  • Highest 11 May, 2026

    85.6 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    76.8 °F
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