January in Sim is the most freezing month of the year. In January, the weather in Sim is typically freezing. Average daily high temperature in January is about 11 degrees below zero. On average, Sim has 16 cloudy, 9 snowy, 5 sunny, and 1 partly cloudy day in January. The snowfalls are usually light. January as well as April, September, and October is considered the most uncomfortable time to visit Sim.