Pack or skip
Thermal underwear for Michigan City in January
Verdict
Pack it
Lows around 21°F — thermals are the difference between a walk and a march.
Why
Michigan City in January averages highs of 34°F, lows of 21°F, 9 rainy days.
That climate means thermal underwear earns its space in the bag. Lows around 21°F — thermals are the difference between a walk and a march.