December in Iskitim is the windiest month of the year. In December, the weather in Iskitim is typically freezing. Average daily high temperature in December is about 11 degrees below zero. On average, Iskitim has 16 cloudy, 14 snowy, and 1 sunny day in December. The snowfalls are usually light. December as well as January, February, April, and October is considered the most uncomfortable time to visit Iskitim.