In December, the weather in Kostyukovka is typically freezing. Average daily high temperature in December is about 18 degrees below zero. On average, Kostyukovka has 17 cloudy, 7 partly cloudy, 5 sunny, and 2 snowy days in December. The snowfalls are usually light. December as well as January, February, and November is considered the most uncomfortable time to visit Kostyukovka.