The Arboretum Weather Forecast

    • 58
    • 81

    Mostly Sunny

    • 64
    • 87

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

    • 63
    • 88

    Sunny

    • 62
    • 86

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

Today 14 Oct Los Angeles County San Gabriel Valley

Sunny. Highs around 80.

Tonight 14 Oct Los Angeles County San Gabriel Valley

Clear. Lows around 60.

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The Arboretum Temperature Statistics

October Temperature

El Monte (4.3 miles)

  • Lowest 1 October, 2026

    66.2 °F

  • Average October

    87.3 °F

  • Highest 2 October, 2026

    104 °F

Climate (2021–2026)

El Monte (4.3 miles)

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  • Average Low 2021–2026

    60 °F

  • Average 2021–2026

    70.8 °F

  • Average High 2021–2026

    77.4 °F
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