April in Grand Rapids is the rainiest and the windiest month of the year. In April, the weather in Grand Rapids is typically warm. Average daily high temperature in April is about 12 degrees above zero. On average, Grand Rapids has 15 rainy, 7 cloudy, 6 sunny, and 2 partly cloudy days in April. The rains are usually heavy. April as well as March, October, November, and December is considered the most uncomfortable time to visit Grand Rapids.