Powder Canyon Weather Forecast

    • 66
    • 82

    Patchy Fog

    • 67
    • 88

    Mostly Cloudy

    • 62
    • 80

    Partly Sunny

    • 62
    • 76

    Mostly Sunny

    • 65
    • 85

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 65
    • 87

    Mostly Sunny

Today 25 Sep Los Angeles County San Gabriel Valley

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

Tonight 25 Sep Los Angeles County San Gabriel Valley

Low Clouds and fog developing. Lows in the mid 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Powder Canyon Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    77.6 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
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