June in Ust-Omchug is the windiest month of the year. In June, the weather in Ust-Omchug is typically warm. Average daily high temperature in June is about 14 degrees above zero. On average, Ust-Omchug has 10 partly cloudy, 9 cloudy, 6 sunny, and 5 rainy days in June. The rains are usually light.