Pack or skip
Beanie for Milwaukee in December
Verdict
Pack it
Lows around 19°F — a beanie doubles the perceived warmth for zero grams.
Why
Milwaukee in December averages highs of 32°F, lows of 19°F, 11 rainy days.
That climate means a beanie earns its space in the bag. Lows around 19°F — a beanie doubles the perceived warmth for zero grams.