April in Pocatello is the windiest month of the year. In April, the weather in Pocatello is typically warm. Average daily high temperature in April is about 10 degrees above zero. On average, Pocatello has 12 rainy, 9 sunny, 7 partly cloudy, and 2 cloudy days in April. The rains are usually moderate. April as well as February, March, and November is considered the most uncomfortable time to visit Pocatello.