December in Choibalsan is the snowiest month of the year. In December, the weather in Choibalsan is typically freezing. Average daily high temperature in December is about 14 degrees below zero. On average, Choibalsan has 20 sunny, 10 partly cloudy, and 1 snowy day in December. December as well as January and February is considered the most uncomfortable time to visit Choibalsan.