March in Kostrovo is the windiest and the sunniest month of the year. In March, the weather in Kostrovo is typically cold. Average daily high temperature in March is about 2 degrees above zero. On average, Kostrovo has 9 cloudy, 8 sunny, 8 partly cloudy, 4 snowy, and 2 rainy days in March. The snowfalls are usually light. March as well as April, October, and November is considered the most uncomfortable time to visit Kostrovo.