April in Sheridan is the windiest and the cloudiest month of the year. In April, the weather in Sheridan is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Sheridan has 10 sunny, 9 rainy, 7 partly cloudy, 3 cloudy, and 1 snowy day in April. The rains are usually moderate. April as well as January, February, March, and November is considered the most uncomfortable time to visit Sheridan.