April in Sturgis is the rainiest month of the year. In April, the weather in Sturgis is typically warm. Average daily high temperature in April is about 13 degrees above zero. On average, Sturgis has 15 rainy, 8 sunny, 5 cloudy, and 2 partly cloudy days in April. The rains are usually heavy. April as well as March, November, and December is considered the most uncomfortable time to visit Sturgis.