December in Poselok BAM is the most freezing month of the year. In December, the weather in Poselok BAM is typically freezing. Average daily high temperature in December is about 21 degrees below zero. On average, Poselok BAM has 16 partly cloudy, 10 sunny, 4 cloudy, and 1 snowy day in December. The snowfalls are usually light. December as well as January, February, and November is considered the most uncomfortable time to visit Poselok BAM.