John Zimmerman Park Weather Forecast

    • 71
    • 94

    Mostly Sunny

    • 70
    • 90

    Increasing Clouds

    • 70
    • 93

    Mostly Sunny

    • 69
    • 94

    Mostly Sunny

    • 68
    • 89

    Mostly Sunny

    • 68
    • 89

    Mostly Sunny

    • 68
    • 89

    Partly Sunny

Today 23 Jul Los Angeles County Inland Coast including Downtown Los Angeles

Sunny. Patchy fog early in the morning. Highs in the mid 80s to mid 90s.

Tonight 23 Jul Los Angeles County Inland Coast including Downtown Los Angeles

Mostly clear in the evening then partly cloudy. Lows around 70.

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John Zimmerman Park Temperature Statistics

July Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 3 July, 2026

    61.6 °F

  • Average July

    76.2 °F

  • Highest 15 July, 2026

    92.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.5 °F

  • Average High 2021–2026

    76.8 °F
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