March in New Carrollton is the windiest month of the year. In March, the weather in New Carrollton is typically warm. Average daily high temperature in March is about 13 degrees above zero. On average, New Carrollton has 10 sunny, 10 partly cloudy, 9 rainy, and 2 cloudy days in March. The rains are usually heavy. March as well as January, February, July, and August is considered the most uncomfortable time to visit New Carrollton.