Pack or skip
Thermal underwear for Milwaukee in December
Verdict
Pack it
Lows around 19°F — thermals are the difference between a walk and a march.
Why
Milwaukee in December averages highs of 32°F, lows of 19°F, 11 rainy days.
That climate means thermal underwear earns its space in the bag. Lows around 19°F — thermals are the difference between a walk and a march.