Pack or skip
Beanie for Jacksonville in December
Verdict
Pack it
Lows around 45°F — a beanie doubles the perceived warmth for zero grams.
Why
Jacksonville in December averages highs of 66°F, lows of 45°F, 8 rainy days.
That climate means a beanie earns its space in the bag. Lows around 45°F — a beanie doubles the perceived warmth for zero grams.