Grant Rea Park Weather Forecast

    • 72
    • 101

    Hot

    • 69
    • 96

    Hot

    • 67
    • 91

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 68
    • 87

    Partly Sunny

    • 67
    • 88

    Mostly Cloudy

    • 68
    • 90

    Partly Sunny

Today 28 Aug Los Angeles County San Gabriel Valley

Partly cloudy. Highs 101 to 105.

Tonight 28 Aug Los Angeles County San Gabriel Valley

Mostly clear. Lows in the lower 70s.

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Grant Rea Park Temperature Statistics

August Temperature

El Monte (5.6 miles)

  • Lowest 4 August, 2026

    69.8 °F

  • Average August

    86 °F

  • Highest 26 August, 2026

    102.2 °F

Climate (2021–2026)

El Monte (5.6 miles)

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  • Average Low 2021–2026

    59.9 °F

  • Average 2021–2026

    70.7 °F

  • Average High 2021–2026

    77.3 °F
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