Pack or skip
Beanie for Boston in January
Verdict
Pack it
Lows around 22°F — a beanie doubles the perceived warmth for zero grams.
Why
Boston in January averages highs of 37°F, lows of 22°F, 11 rainy days.
That climate means a beanie earns its space in the bag. Lows around 22°F — a beanie doubles the perceived warmth for zero grams.