March in Ironton is the rainiest month of the year. In March, the weather in Ironton is typically warm. Average daily high temperature in March is about 11 degrees above zero. On average, Ironton has 15 rainy, 6 sunny, 6 cloudy, and 4 partly cloudy days in March. The rains are usually heavy. March as well as January, February, and December is considered the most uncomfortable time to visit Ironton.