Oak Brook Weather Forecast

    • 65
    • 77

    Slight Chance Thunderstorms

    • 64
    • 80

    Mostly Sunny

    • 67
    • 85

    Mostly Sunny

    • 71
    • 88

    Chance Thunderstorms

    • 66
    • 85

    Rain Showers Likely

    • 65
    • 82

    Slight Chance Thunderstorms

Today 5 Jul DuPage

Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms early in the Morning, then a slight chance of Showers in the late morning and afternoon. A slight chance of Thunderstorms in the afternoon. Highs in the upper 70s. Northeast Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 5 Jul DuPage

Mostly cloudy in the Evening, then clearing. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Oak Brook Temperature Statistics

July Temperature

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

  • Lowest 3 July, 2026

    71.1 °F

  • Average July

    82.8 °F

  • Highest 1 July, 2026

    95.6 °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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