Indiana Dunes National Lakeshore Weather Forecast

    • 50
    • 63

    Mostly Cloudy

    • 46
    • 66

    Slight Chance Rain Showers

    • 43
    • 54

    Partly Sunny

    • 42
    • 51

    Partly Sunny

    • 47
    • 62

    Rain Showers Likely

    • 46
    • 55

    Partly Sunny

Today 8 May Porter

Mostly cloudy. A slight chance of Showers early in the morning. A slight chance of Showers in the afternoon. Highs in the mid 60s. South Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 8 May Porter

Mostly cloudy. Lows in the upper 40s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Indiana Dunes National Lakeshore Temperature Statistics

May Temperature

Michigan City Municipal Airport (11.8 miles)

  • Lowest 2 May, 2026

    28.4 °F

  • Average May

    49.1 °F

  • Highest 4 May, 2026

    77 °F

Climate (2021–Present)

Michigan City Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.4 °F
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