In June, the weather in Ust-Kut is typically warm. Average daily high temperature in June is about 20 degrees above zero. On average, Ust-Kut has 15 partly cloudy, 8 sunny, 4 cloudy, and 3 rainy days in June. The rains are usually light. June as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Ust-Kut.