Spring starts in March and is mild, with a daily average high temperature in the region of 55°F (12.8°C). Blooming flowers along the National Mall are a joy to both tourists and locals. Spring breaks and the end of the frigid cold add to the crowds in Washington, D.C., in March. Humidity levels drop down, but a light jacket is advisable as the rain is unpredictable. Better, be equipped with some warm clothes as there is always a possibility of an odd cold wave or two.