January in Longyugan is the most freezing month of the year. In January, the weather in Longyugan is typically freezing. Average daily high temperature in January is about 18 degrees below zero. On average, Longyugan has 27 cloudy, 3 snowy, and 1 sunny day in January. The snowfalls are usually light. January as well as February, March, May, and June is considered the most uncomfortable time to visit Longyugan.