July in Bolshoy Atmas is the rainiest and the warmest month of the year. In July, the weather in Bolshoy Atmas is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Bolshoy Atmas has 10 rainy, 9 partly cloudy, 8 sunny, and 4 cloudy days in July. The rains are usually moderate.