In September, the weather in Las Lenas is typically freezing. Average daily high temperature in September is about 1 degree below zero. On average, Las Lenas has 13 sunny, 12 snowy, 4 partly cloudy, and 1 cloudy day in September. The snowfalls are usually heavy. September as well as April, May, October, and November is considered the most uncomfortable time to visit Las Lenas.