March in Bozeman is the cloudiest month of the year. In March, the weather in Bozeman is typically cold. Average daily high temperature in March is about 4 degrees above zero. On average, Bozeman has 13 rainy, 9 partly cloudy, 5 cloudy, and 4 sunny days in March. The rains are usually moderate. March as well as April and May is considered the most uncomfortable time to visit Bozeman.