Washington D.C., District of Columbia weather in December

Averages from 2021–2025 (155 days of record).

Average high: 48°F
Average low: 33°F
Rainy days: ~9 per month
Total precipitation: 3.8 in
Warmest recorded: 68°F
Coldest recorded: 6°F

Expect December days in Washington D.C., District of Columbia to top out around 48°F and cool to about 33°F overnight, with roughly 9 days of measurable rain across the month. In recent years December has ranged from 6°F to 68°F.

Other months

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Current Washington D.C., District of Columbia forecast → · Historical data by Open-Meteo (ERA5).