Pack or skip
Sunscreen for Michigan City in March
Verdict
Pack it
Sun still finds you at 47°F — UV doesn't care about temperature.
Why
Michigan City in March averages highs of 47°F, lows of 30°F, 8 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 47°F — UV doesn't care about temperature.