Irwindale Weather Forecast

    • 71
    • 101

    Hot

    • 73
    • 101

    Hot

    • 74
    • 102

    Hot

    • 72
    • 104

    Hot

    • 72
    • 102

    Hot

    • 73
    • 104

    Hot

Today 23 Aug Los Angeles County San Gabriel Valley

Sunny. Highs 92 to 102.

Tonight 23 Aug Los Angeles County San Gabriel Valley

Partly cloudy. Lows around 70.

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Irwindale Temperature Statistics

August Temperature

El Monte (5.6 miles)

  • Lowest 4 August, 2026

    69.8 °F

  • Average August

    84.5 °F

  • Highest 19 August, 2026

    98.6 °F

Climate (2021–2026)

El Monte (5.6 miles)

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  • Average Low 2021–2026

    59.8 °F

  • Average 2021–2026

    70.6 °F

  • Average High 2021–2026

    77.3 °F
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