Chicago Lawn Weather Forecast

    • 56
    • 65

    Chance Rain Showers

    • 56
    • 64

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 56
    • 66

    Mostly Cloudy

    • 56
    • 68

    Mostly Cloudy

    • 57
    • 71

    Mostly Cloudy

Today 21 Sep Central Cook

Cloudy. A chance of Showers with Areas of drizzle early in the Morning, then a slight chance of Showers late in the morning. Highs in the mid 60s. Northeast Winds 15 to 20 Mph, Diminishing to 10 to 15 Mph in the afternoon. Chance of precipitation 30 percent.

Tonight 21 Sep Central Cook

Mostly cloudy. Lows in the mid 50s. Northeast Winds 10 to 15 Mph.

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Chicago Lawn Temperature Statistics

September Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 14 September, 2026

    53.1 °F

  • Average September

    75.4 °F

  • Highest 2 September, 2026

    96.1 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (2.5 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    61.9 °F
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