Pack or skip
Beanie for Denver in December
Verdict
Pack it
Lows around 18°F — a beanie doubles the perceived warmth for zero grams.
Why
Denver in December averages highs of 44°F, lows of 18°F, 6 rainy days.
That climate means a beanie earns its space in the bag. Lows around 18°F — a beanie doubles the perceived warmth for zero grams.