In September, the weather in Pervouralsk is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Pervouralsk has 14 cloudy, 11 rainy, 3 sunny, and 2 partly cloudy days in September. The rains are usually moderate. September as well as January, February, April, and October is considered the most uncomfortable time to visit Pervouralsk.