April in Miles City is the windiest month of the year. In April, the weather in Miles City is typically warm. Average daily high temperature in April is about 12 degrees above zero. On average, Miles City has 12 partly cloudy, 8 sunny, 6 rainy, and 4 cloudy days in April. The rains are usually light. April as well as February, March, and November is considered the most uncomfortable time to visit Miles City.