Oak Brook Weather Forecast

    • 62
    • 82

    Mostly Sunny

    • 62
    • 84

    Mostly Sunny

    • 65
    • 86

    Partly Sunny

    • 64
    • 83

    Mostly Cloudy

    • 63
    • 79

    Chance Rain Showers

    • 62
    • 79

    Chance Rain Showers

Today 16 Sep DuPage

Mostly sunny. Highs in the mid 80s. East Winds 5 to 10 Mph.

Tonight 16 Sep DuPage

Partly cloudy early in the Evening, then becoming mostly clear. Lows around 60. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Oak Brook Temperature Statistics

September Temperature

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

  • Lowest 7 September, 2025

    46.9 °F

  • Average September

    65.2 °F

  • Highest 12 September, 2025

    84 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61.7 °F
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