January in Billings is the windiest month of the year. In January, the weather in Billings is typically freezing. Average daily high temperature in January is about zero. On average, Billings has 11 partly cloudy, 9 cloudy, 7 sunny, and 4 rainy days in January. The rains are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit Billings.