In December, the weather in Omchak is typically freezing. Average daily high temperature in December is about 27 degrees below zero. On average, Omchak has 18 cloudy, 6 sunny, 4 partly cloudy, and 3 snowy days in December. The snowfalls are usually light. December as well as January, February, March, and September is considered the most uncomfortable time to visit Omchak.