Leffingwell Ranch Park Weather Forecast

    • 69
    • 92

    Rain Showers Likely

    • 68
    • 86

    Rain Showers Likely

    • 67
    • 84

    Slight Chance Thunderstorms

    • 66
    • 85

    Patchy Fog

    • 68
    • 87

    Patchy Fog

    • 70
    • 89

    Patchy Fog

    • 67
    • 88

    Mostly Sunny

Today 17 Sep Los Angeles County San Gabriel Valley

Partly cloudy in the morning then mostly cloudy. Highs in the upper 80s to mid 90s.

Tonight 17 Sep Los Angeles County San Gabriel Valley

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows around 70. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Leffingwell Ranch Park Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (4.3 miles)

  • Lowest 11 September, 2025

    64.9 °F

  • Average September

    74.4 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.7 °F
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