John Zimmerman Park Weather Forecast

    • 61
    • 78

    Decreasing Clouds

    • 63
    • 80

    Partly Sunny

    • 63
    • 82

    Partly Sunny

    • 67
    • 83

    Partly Sunny

    • 68
    • 86

    Mostly Sunny

    • 65
    • 86

    Mostly Sunny

    • 67
    • 84

    Mostly Sunny

Today 8 Jun Los Angeles County Inland Coast including Downtown Los Angeles

Cloudy in the morning then partly cloudy. Highs in the lower to mid 70s.

Tonight 8 Jun Los Angeles County Inland Coast including Downtown Los Angeles

Partly cloudy. Lows around 60.

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John Zimmerman Park Temperature Statistics

June Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 1 June, 2026

    62.7 °F

  • Average June

    70 °F

  • Highest 3 June, 2026

    79.6 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (4.3 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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