In September, the weather in Bolshoy Nimnyr is typically cold. Average daily high temperature in September is about 5 degrees above zero. On average, Bolshoy Nimnyr has 19 rainy, 5 snowy, 3 sunny, 2 cloudy, and 1 partly cloudy day in September. The rains are usually heavy. September as well as January, February, March, and May is considered the most uncomfortable time to visit Bolshoy Nimnyr.