Pack or skip
Beanie for Arlington in January
Verdict
Pack it
Lows around 37°F — a beanie doubles the perceived warmth for zero grams.
Why
Arlington in January averages highs of 57°F, lows of 37°F, 8 rainy days.
That climate means a beanie earns its space in the bag. Lows around 37°F — a beanie doubles the perceived warmth for zero grams.