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

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

Average high

43°F

Average low

28°F

Rainy days

~8 per month

Total precipitation

3.3 in

Warmest recorded

73°F

Coldest recorded

6°F

Expect January days in Washington D.C., District of Columbia to top out around 43°F and cool to about 28°F overnight, with roughly 8 days of measurable rain across the month. In recent years January has ranged from 6°F to 73°F.