September in Kiana is the windiest month of the year. In September, the weather in Kiana is typically cold. Average daily high temperature in September is about 8 degrees above zero. On average, Kiana has 10 rainy, 7 sunny, 7 cloudy, and 6 partly cloudy days in September. The rains are usually moderate. September as well as January, February, March, and August is considered the most uncomfortable time to visit Kiana.