April in Shirakamut is the rainiest month of the year. In April, the weather in Shirakamut is typically cold. Average daily high temperature in April is about 7 degrees above zero. On average, Shirakamut has 27 rainy, 2 sunny, and 1 cloudy day in April. The rains are usually heavy. April as well as March, May, and October is considered the most uncomfortable time to visit Shirakamut.