Chicago O'Hare International Airport Weather Forecast

    • 70
    • 89

    Chance Thunderstorms

    • 70
    • 90

    Partly Sunny

    • 69
    • 90

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 66
    • 86

    Mostly Sunny

    • 63
    • 84

    Partly Sunny

    • 64
    • 81

    Partly Sunny

Today 20 Sep Cook

Partly cloudy early in the morning then clearing. Patchy fog in the morning. Highs in the upper 80s. South Winds 10 to 15 Mph.

Tonight 20 Sep Cook

Partly cloudy with a 30 percent chance of Showers and Thunderstorms. Lows around 70. South Winds 5 to 10 Mph.

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Chicago O'Hare International Airport Temperature Statistics

September Temperature

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

  • Lowest 2 September, 2017

    50 °F
  • Average September

    66.2 °F
  • Highest 15 September, 2017

    87.1 °F

Climate (2010–Present)

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

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  • Average Low 2010–Present

    42.2 °F
  • Average 2010–Present

    51 °F
  • Average High 2010–Present

    58.8 °F
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