Indiana Dunes National Lakeshore Weather Forecast

    • 65
    • 76

    Becoming Sunny

    • 72
    • 83

    Rain Showers

    • 70
    • 83

    Rain Showers

    • 68
    • 79

    Rain Showers Likely

    • 66
    • 77

    Chance Thunderstorms

    • 63
    • 74

    Slight Chance Thunderstorms

Today 8 Aug Porter

Mostly cloudy in the morning then clearing. Patchy fog early in the morning. Highs in the lower 80s Inland, but only in the mid 70s near the lake. West Winds 5 to 10 Mph, becoming north in the afternoon.

Tonight 8 Aug Porter

Mostly clear. Lows in the lower 60s. East Winds around 5 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Indiana Dunes National Lakeshore Temperature Statistics

August Temperature

Michigan City Municipal Airport (11.8 miles)

  • Lowest 3 August, 2026

    59 °F

  • Average August

    69.9 °F

  • Highest 4 August, 2026

    82.4 °F

Climate (2021–2026)

Michigan City Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.4 °F
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