December in Us'va is the cloudiest month of the year. In December, the weather in Us'va is typically freezing. Average daily high temperature in December is about 10 degrees below zero. On average, Us'va has 15 snowy, 14 cloudy, 1 sunny, and 1 partly cloudy day in December. The snowfalls are usually moderate. December as well as January, February, April, and September is considered the most uncomfortable time to visit Us'va.