July in Sangju is the rainiest and the cloudiest month of the year. In July, the weather in Sangju is typically warm. Average daily high temperature in July is about 28 degrees above zero. On average, Sangju has 17 rainy, 6 partly cloudy, 4 sunny, and 4 cloudy days in July. The rains are usually heavy. July as well as January, February, March, and August is considered the most uncomfortable time to visit Sangju.