Willis Tower (Sears Tower) Weather Forecast

    • 66
    • 80

    Mostly Sunny

    • 65
    • 79

    Slight Chance Thunderstorms

    • 66
    • 76

    Chance Rain Showers

    • 65
    • 78

    Rain Showers Likely

    • 64
    • 77

    Chance Rain Showers

    • 62
    • 76

    Chance Rain Showers

Today 18 Sep Central Cook

Mostly sunny. Highs in the mid 80s Inland, but only around 80 near the lake. East Winds 5 to 10 Mph.

Tonight 18 Sep Central Cook

Mostly clear. Lows in the mid 60s. Northeast Winds around 5 Mph.

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Willis Tower (Sears Tower) Temperature Statistics

September Temperature

Chicago, Chicago Midway Airport (8.7 miles)

  • Lowest 7 September, 2025

    48.9 °F

  • Average September

    68.5 °F

  • Highest 12 September, 2025

    84.9 °F

Climate (2020–Present)

Chicago, Chicago Midway Airport (8.7 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    61.8 °F
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