Oak Brook Weather Forecast

    • 56
    • 77

    Mostly Sunny

    • 59
    • 78

    Becoming Sunny

    • 65
    • 81

    Partly Sunny

    • 66
    • 83

    Chance Thunderstorms

    • 64
    • 82

    Mostly Sunny

    • 64
    • 81

    Partly Sunny

    • 67
    • 81

    Chance Rain Showers

Today 23 Aug DuPage

Partly cloudy. Temperatures in the mid 70s. Northwest Winds around 10 Mph.

Tonight 23 Aug DuPage

Mostly clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph in the Evening, becoming light and variable.

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Oak Brook Temperature Statistics

August Temperature

Chicago, Chicago-O'Hare International Airport (9.9 miles)

  • Lowest 3 August, 2026

    62.7 °F

  • Average August

    75.2 °F

  • Highest 7 August, 2026

    87.7 °F

Climate (2021–2026)

Chicago, Chicago-O'Hare International Airport (9.9 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.9 °F
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