Gary Weather Forecast

    • 62
    • 72

    Chance Thunderstorms

    • 65
    • 77

    Rain Showers

    • 57
    • 69

    Rain Showers Likely

    • 54
    • 66

    Rain Showers Likely

    • 54
    • 65

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 57
    • 68

    Mostly Cloudy

Today 18 Sep Lake

Partly cloudy. Highs around 70.

Tonight 18 Sep Lake

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. A chance of Showers and Thunderstorms late. Lows in the lower 60s. East Winds 5 to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gary Temperature Statistics

September Temperature

Gary Regional Airport (3.1 miles)

  • Lowest 14 September, 2026

    51.8 °F

  • Average September

    74.4 °F

  • Highest 2 September, 2026

    98.6 °F

Climate (2021–2026)

Gary Regional Airport (3.1 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    61.4 °F
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