January in Angarsk is the cloudiest and the most freezing month of the year. In January, the weather in Angarsk is typically freezing. Average daily high temperature in January is about 16 degrees below zero. On average, Angarsk has 16 cloudy, 10 partly cloudy, 4 sunny, and 1 snowy day in January. The snowfalls are usually light. January as well as February and December is considered the most uncomfortable time to visit Angarsk.