Chicago O'Hare International Airport Weather Forecast

    • 48
    • 66

    Decreasing Clouds

    • 48
    • 66

    Partly Sunny

    • 48
    • 68

    Mostly Sunny

    • 56
    • 73

    Partly Sunny

    • 60
    • 79

    Mostly Cloudy

    • 61
    • 81

    Partly Sunny

    • 59
    • 77

    Partly Sunny

Today 5 Sep Central Cook

Increasing cloudiness. Breezy. Highs in the mid 60s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 5 Sep Central Cook

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 40s in the Suburbs to the lower 50s Downtown. West Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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Chicago O'Hare International Airport Temperature Statistics

September Temperature

Chicago, Chicago-O'Hare International Airport (0 miles)

  • Lowest 1 September, 2025

    57.9 °F

  • Average September

    67.8 °F

  • Highest 2 September, 2025

    80.1 °F

Climate (2020–Present)

Chicago, Chicago-O'Hare International Airport (0 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61.6 °F
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