July in Nonsan is the rainiest and the cloudiest month of the year. In July, the weather in Nonsan is typically hot. Average daily high temperature in July is about 28 degrees above zero. On average, Nonsan has 22 rainy, 5 sunny, 2 cloudy, and 2 partly cloudy days in July. The rains are usually heavy. July as well as January, February, August, and December is considered the most uncomfortable time to visit Nonsan.