Pack or skip
Beanie for Washington DC in March
Verdict
Pack it
Lows around 38°F — a beanie doubles the perceived warmth for zero grams.
Why
Washington DC in March averages highs of 58°F, lows of 38°F, 7 rainy days.
That climate means a beanie earns its space in the bag. Lows around 38°F — a beanie doubles the perceived warmth for zero grams.