In March, the weather in Sylvania is typically cold. Average daily high temperature in March is about 8 degrees above zero. On average, Sylvania has 9 partly cloudy, 8 sunny, 7 rainy, 6 cloudy, and 1 snowy day in March. The rains are usually moderate. March as well as January, February, April, and November is considered the most uncomfortable time to visit Sylvania.