Gary Weather Forecast

    • 74
    • 89

    Chance Thunderstorms

    • 72
    • 91

    Chance Thunderstorms

    • 66
    • 79

    Slight Chance Thunderstorms

    • 65
    • 78

    Partly Sunny

    • 66
    • 82

    Partly Sunny

    • 71
    • 86

    Chance Rain Showers

Today 3 Sep Lake

Partly cloudy. A chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. North Winds 10 to 15 Mph. Chance of precipitation 30 percent. Heat index Values up to 102.

Tonight 3 Sep Lake

Mostly clear. A slight chance of Showers and Thunderstorms late. Humid with Lows in the lower 70s. South Winds around 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gary Temperature Statistics

September Temperature

Gary Regional Airport (3.1 miles)

  • Lowest 1 September, 2026

    75.2 °F

  • Average September

    83.6 °F

  • Highest 1 September, 2026

    96.8 °F

Climate (2021–2026)

Gary Regional Airport (3.1 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    61.4 °F
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