Pack or skip
Sunscreen for Michigan City in August
Verdict
Pack it
Sun still finds you at 81°F — UV doesn't care about temperature.
Why
Michigan City in August averages highs of 81°F, lows of 63°F, 9 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 81°F — UV doesn't care about temperature.