South Chicago Heights Weather Forecast

    • 55
    • 64

    Mostly Cloudy

    • 54
    • 66

    Mostly Cloudy

    • 53
    • 68

    Mostly Cloudy

    • 50
    • 68

    Partly Sunny

    • 51
    • 68

    Mostly Cloudy

    • 55
    • 72

    Partly Sunny

Today 22 Sep Southern Cook

Mostly cloudy. A slight chance of Showers. Highs in the mid 60s. Northeast Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 22 Sep Southern Cook

Mostly cloudy. A slight chance of Showers in the evening. Lows in the mid 50s. Northeast Winds around 10 Mph. Chance of precipitation 20 percent.

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South Chicago Heights Temperature Statistics

September Temperature

Lansing Municipal Airport (6.8 miles)

  • Lowest 14 September, 2026

    47.3 °F

  • Average September

    73 °F

  • Highest 2 September, 2026

    94.6 °F

Climate (2021–2026)

Lansing Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    60.4 °F
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