Washington, D.C. has a humid subtropical climate with hot, humid summers and mild winters. At Washington Reagan Airport, the 1991-2020 reference averages range from a daily high of 45°F (7°C) in Jan to 90°F (32°C) in Jul. Monthly precipitation averages sum to 41.8 inches (1062 mm) per year.
Spring brings cherry blossoms in late March and severe thunderstorm risk. Summers are oppressively humid with frequent code-orange air quality days. Fall is the most comfortable season. Winter snow is unpredictable: some years see 30+ inches, others see almost none. Nor'easters and Atlantic moisture occasionally bring crippling ice and snow events.