Pack or skip
Thermal underwear for Boston in February
Verdict
Pack it
Lows around 25°F — thermals are the difference between a walk and a march.
Why
Boston in February averages highs of 40°F, lows of 25°F, 10 rainy days.
That climate means thermal underwear earns its space in the bag. Lows around 25°F — thermals are the difference between a walk and a march.