Fullerton Municipal Airport Weather Forecast

    • 64
    • 80

    Increasing Clouds

    • 64
    • 84

    Becoming Sunny

    • 63
    • 87

    Partly Sunny

    • 64
    • 86

    Partly Sunny

    • 64
    • 86

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

Today 3 Jul Orange County Inland

Partly cloudy with patchy fog this morning. Becoming sunny. Highs around 76 towards the coast to 80 farther inland. Areas of Winds south to 10 Mph.

Tonight 3 Jul Orange County Inland

Mostly clear this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 55 to 63. Areas of Winds southwest to 10 Mph this evening becoming light.

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Fullerton Municipal Airport Temperature Statistics

July Temperature

Fullerton, Fullerton Municipal Airport (0 miles)

  • Lowest 1 July, 2025

    61 °F

  • Average July

    68.6 °F

  • Highest 1 July, 2025

    79 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (0 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.8 °F
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