Whittier Narrows Dam County Recreational Area Weather Forecast

    • 56
    • 66

    Cloudy

    • 55
    • 74

    Partly Sunny

    • 59
    • 83

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

    • 68
    • 96

    Mostly Sunny

    • 66
    • 93

    Mostly Sunny

Today 17 May Los Angeles County San Gabriel Valley

Mostly cloudy. Patchy drizzle in the morning. Highs in the mid to upper 60s.

Tonight 17 May Los Angeles County San Gabriel Valley

Mostly cloudy with a 20 percent chance of rain. Lows in the upper 40s to mid 50s.

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Whittier Narrows Dam County Recreational Area Temperature Statistics

May Temperature

El Monte (3.1 miles)

  • Lowest 4 May, 2025

    55.4 °F

  • Average May

    70.3 °F

  • Highest 10 May, 2025

    102.2 °F

Climate (2020–Present)

El Monte (3.1 miles)

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  • Average Low 2020–2025

    59.4 °F

  • Average 2020–2025

    70.4 °F

  • Average High 2020–2025

    77.1 °F
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