The Arboretum Weather Forecast

    • 54
    • 73

    Rain Showers

    • 53
    • 69

    Rain Showers

    • 53
    • 73

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 58
    • 80

    Partly Sunny

    • 58
    • 82

    Mostly Sunny

Today 21 Oct Los Angeles County San Gabriel Valley

Partly cloudy with a chance of Showers in the Morning, then Showers likely in the afternoon. Highs in the lower to mid 70s. Chance of precipitation 60 percent.

Tonight 21 Oct Los Angeles County San Gabriel Valley

Showers in the Evening, then Showers with a slight chance of Thunderstorms after midnight. Lows in the mid to upper 50s. South Winds around 15 Mph in the evening.

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The Arboretum Temperature Statistics

October Temperature

El Monte (4.3 miles)

  • Lowest 13 October, 2026

    53.6 °F

  • Average October

    83.7 °F

  • Highest 2 October, 2026

    104 °F

Climate (2021–2026)

El Monte (4.3 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    70.8 °F

  • Average High 2021–2026

    77.5 °F
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