January in Miles City is the snowiest and the most freezing month of the year. In January, the weather in Miles City is typically freezing. Average daily high temperature in January is about zero. On average, Miles City has 12 partly cloudy, 10 sunny, 5 cloudy, 3 snowy, and 1 rainy day in January. The snowfalls are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Miles City.