John Zimmerman Park Weather Forecast

    • 54
    • 82

    Becoming Sunny

    • 57
    • 87

    Partly Sunny

    • 55
    • 81

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 53
    • 72

    Partly Sunny

Today 17 Apr Los Angeles County Inland Coast including Downtown Los Angeles

Mostly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Tonight 17 Apr Los Angeles County Inland Coast including Downtown Los Angeles

Mostly clear. Lows in the lower to mid 50s. West Winds around 15 Mph in the evening.

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John Zimmerman Park Temperature Statistics

April Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 4 April, 2026

    52.6 °F

  • Average April

    67.3 °F

  • Highest 4 April, 2026

    91.7 °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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