Pack or skip
Sunscreen for Michigan City in July
Verdict
Pack it
Sun still finds you at 82°F — UV doesn't care about temperature.
Why
Michigan City in July averages highs of 82°F, lows of 64°F, 10 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 82°F — UV doesn't care about temperature.