Hegewisch Weather Forecast

    • 71
    • 81

    Slight Chance Thunderstorms

    • 73
    • 90

    Chance Thunderstorms

    • 70
    • 86

    Chance Thunderstorms

    • 66
    • 76

    Partly Sunny

    • 67
    • 78

    Mostly Sunny

    • 68
    • 83

    Mostly Sunny

Today 17 Aug Central Cook

Mostly cloudy through mid Afternoon, then becoming partly cloudy. A slight chance of Showers and Thunderstorms in the morning. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 17 Aug Central Cook

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Lows in the lower 70s. Northeast Winds around 10 Mph, becoming east after midnight. Chance of precipitation 20 percent.

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Hegewisch Temperature Statistics

August Temperature

Gary Regional Airport (6.8 miles)

  • Lowest 2 August, 2025

    57.2 °F

  • Average August

    76.1 °F

  • Highest 9 August, 2025

    95 °F

Climate (2020–Present)

Gary Regional Airport (6.8 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    60.8 °F
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