Pack or skip
Winter coat for Washington DC in December
Verdict
Pack it
Average lows dip to 32°F — a real winter coat, not a jacket.
Why
Washington DC in December averages highs of 47°F, lows of 32°F, 9 rainy days.
That climate means a winter coat earns its space in the bag. Average lows dip to 32°F — a real winter coat, not a jacket.