O'Hare Weather Forecast

    • 59
    • 68

    Mostly Cloudy

    • 54
    • 67

    Partly Sunny

    • 55
    • 67

    Partly Sunny

Today 24 Sep Central Cook

Mostly cloudy. Highs in the upper 60s. East Winds 5 to 10 Mph.

Tonight 24 Sep Central Cook

Mostly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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O'Hare Temperature Statistics

September Temperature

Chicago, Chicago-O'Hare International Airport (3.1 miles)

  • Lowest 14 September, 2026

    53.7 °F

  • Average September

    74 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago, Chicago-O'Hare International Airport (3.1 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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