Brookside Park Weather Forecast

    • 63
    • 88

    Increasing Clouds

    • 62
    • 87

    Partly Sunny

    • 59
    • 83

    Partly Sunny

    • 63
    • 82

    Mostly Sunny

    • 65
    • 89

    Mostly Sunny

    • 65
    • 89

    Mostly Sunny

Today 19 Sep Los Angeles County San Gabriel Valley

Partly cloudy in the morning then sunny. Highs in the 80s to around 90.

Tonight 19 Sep Los Angeles County San Gabriel Valley

Mostly clear in the evening then mostly cloudy. Lows in the upper 50s to mid 60s.

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Brookside Park Temperature Statistics

September Temperature

El Monte (8.7 miles)

  • Lowest 2 September, 2026

    64.4 °F

  • Average September

    81.9 °F

  • Highest 9 September, 2026

    107.6 °F

Climate (2021–2026)

El Monte (8.7 miles)

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  • Average Low 2021–2026

    60 °F

  • Average 2021–2026

    70.7 °F

  • Average High 2021–2026

    77.3 °F
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