Pack or skip
Beanie for Phoenix in December
Verdict
Pack it
Lows around 44°F — a beanie doubles the perceived warmth for zero grams.
Why
Phoenix in December averages highs of 66°F, lows of 44°F, 3 rainy days.
That climate means a beanie earns its space in the bag. Lows around 44°F — a beanie doubles the perceived warmth for zero grams.