Fullerton Weather Forecast

    • 52
    • 72

    Increasing Clouds

    • 45
    • 63

    Chance Rain Showers

    • 43
    • 59

    Rain Showers Likely

    • 43
    • 62

    Rain Showers Likely

    • 39
    • 57

    Chance Rain Showers

    • 40
    • 56

    Slight Chance Rain Showers

    • 43
    • 62

    Chance Rain Showers

Today 21 Jan Orange County Inland

Mostly sunny. Highs 68 to 73. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fullerton Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (3.1 miles)

  • Lowest 9 January, 2021

    43 °F

  • Average January

    59.1 °F

  • Highest 15 January, 2021

    91.9 °F

Climate (2010–Present)

Fullerton, Fullerton Municipal Airport (3.1 miles)

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  • Average Low 2010–Present

    57.4 °F

  • Average 2010–Present

    65.9 °F

  • Average High 2010–Present

    77.2 °F
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