In April, the weather in Ust-Kumir is typically cold. Average daily high temperature in April is about 6 degrees above zero. On average, Ust-Kumir has 10 sunny, 7 partly cloudy, 5 rainy, 4 snowy, and 4 cloudy days in April. The rains are usually heavy. April as well as January, May, June, and July is considered the most uncomfortable time to visit Ust-Kumir.