Pack or skip
Winter coat for Michigan City in March
Verdict
Pack it
Average lows dip to 30°F — a real winter coat, not a jacket.
Why
Michigan City in March averages highs of 47°F, lows of 30°F, 8 rainy days.
That climate means a winter coat earns its space in the bag. Average lows dip to 30°F — a real winter coat, not a jacket.