In March, the weather in Kostiantynivka is typically cold. Average daily high temperature in March is about 5 degrees above zero. On average, Kostiantynivka has 17 cloudy, 7 rainy, 5 sunny, and 2 partly cloudy days in March. The rains are usually light. March as well as April, May, November, and December is considered the most uncomfortable time to visit Kostiantynivka.