Lake Michigan Weather Forecast

    • 66
    • 74

    Mostly Sunny

    • 67
    • 77

    Mostly Sunny

    • 66
    • 76

    Partly Sunny

    • 66
    • 80

    Slight Chance Thunderstorms

    • 66
    • 80

    Chance Rain Showers

    • 67
    • 78

    Chance Rain Showers

Today 17 Sep Lake

Mostly sunny. Highs in the lower 80s Inland, but only in the upper 70s near the lake. Northeast Winds 5 to 10 Mph.

Tonight 17 Sep Lake

Mostly clear. Lows in the upper 50s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Lake Michigan Temperature Statistics

September Temperature

Gary Regional Airport (6.8 miles)

  • Lowest 8 September, 2025

    42.8 °F

  • Average September

    63.7 °F

  • Highest 10 September, 2025

    84.2 °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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