South Chicago Heights Weather Forecast

    • 67
    • 79

    Rain Showers Likely

    • 50
    • 81

    Rain Showers Likely

    • 43
    • 59

    Partly Sunny

    • 47
    • 65

    Mostly Cloudy

    • 53
    • 70

    Chance Rain Showers

    • 55
    • 76

    Slight Chance Thunderstorms

Today 18 May Southern Cook

Mostly cloudy. Showers likely in the morning. A chance of Thunderstorms. A chance of Showers in the afternoon. Breezy. Highs around 80. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

Tonight 18 May Southern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms early in the evening. A slight chance of Showers and Thunderstorms after Midnight, then a chance of Showers and Thunderstorms late. Breezy with Lows in the upper 60s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph after midnight. Gusts up to 30 Mph. Chance of precipitation 50 percent.

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South Chicago Heights Temperature Statistics

May Temperature

Lansing Municipal Airport (6.8 miles)

  • Lowest 2 May, 2026

    28.6 °F

  • Average May

    53 °F

  • Highest 16 May, 2026

    81.9 °F

Climate (2021–Present)

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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