In September, the weather in Nunapitchuk is typically warm. Average daily high temperature in September is about 11 degrees above zero. On average, Nunapitchuk has 15 rainy, 6 partly cloudy, 5 cloudy, and 4 sunny days in September. The rains are usually moderate. September as well as January, April, May, and July is considered the most uncomfortable time to visit Nunapitchuk.