May in Cody is the rainiest month of the year. In May, the weather in Cody is typically warm. Average daily high temperature in May is about 14 degrees above zero. On average, Cody has 15 rainy, 7 sunny, 7 partly cloudy, and 2 cloudy days in May. The rains are usually moderate. May as well as March, April, and November is considered the most uncomfortable time to visit Cody.