In September, the weather in Yanji is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Yanji has 19 sunny, 8 partly cloudy, 2 rainy, and 1 cloudy day in September. The rains are usually light. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Yanji.