In March, the weather in South Dayton is typically cold. Average daily high temperature in March is about 4 degrees above zero. On average, South Dayton has 12 rainy, 8 cloudy, 4 sunny, 4 partly cloudy, and 3 snowy days in March. The rains are usually moderate. March as well as April, October, November, and December is considered the most uncomfortable time to visit South Dayton.