December in Koskuduk is the windiest month of the year. In December, the weather in Koskuduk is typically freezing. Average daily high temperature in December is about 11 degrees below zero. On average, Koskuduk has 19 cloudy, 6 snowy, 3 sunny, and 3 partly cloudy days in December. The snowfalls are usually light. December as well as January and February is considered the most uncomfortable time to visit Koskuduk.