South Chicago Heights Weather Forecast

    • 70
    • 85

    Chance Thunderstorms

    • 62
    • 79

    Becoming Sunny

    • 63
    • 82

    Mostly Sunny

    • 67
    • 87

    Partly Sunny

    • 67
    • 84

    Chance Thunderstorms

    • 66
    • 80

    Chance Thunderstorms

    • 64
    • 82

    Slight Chance Thunderstorms

Today 27 Jul Southern Cook

Cloudy. A chance of Showers and Thunderstorms. Some Thunderstorms may be severe with damaging Winds and large hail. Temperatures around 70. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 40 percent.

Tonight 27 Jul Southern Cook

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows around 70. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north after midnight. Chance of precipitation 20 percent.

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South Chicago Heights Temperature Statistics

July Temperature

Lansing Municipal Airport (6.8 miles)

  • Lowest 23 July, 2026

    50 °F

  • Average July

    75.2 °F

  • Highest 15 July, 2026

    94.1 °F

Climate (2021–2026)

Lansing Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60.5 °F
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