December in Horlivka is the windiest and the cloudiest month of the year. In December, the weather in Horlivka is typically freezing. Average daily high temperature in December is about zero. On average, Horlivka has 23 cloudy, 4 snowy, 3 rainy, and 1 sunny day in December. The snowfalls are usually light. December as well as March, April, May, and November is considered the most uncomfortable time to visit Horlivka.