Pack or skip
Winter coat for Michigan City in December
Verdict
Pack it
Average lows dip to 25°F — a real winter coat, not a jacket.
Why
Michigan City in December averages highs of 37°F, lows of 25°F, 9 rainy days.
That climate means a winter coat earns its space in the bag. Average lows dip to 25°F — a real winter coat, not a jacket.