May in Laramie is the rainiest and the cloudiest month of the year. In May, the weather in Laramie is typically warm. Average daily high temperature in May is about 13 degrees above zero. On average, Laramie has 14 rainy, 6 sunny, 6 partly cloudy, and 5 cloudy days in May. The rains are usually heavy. May as well as March and April is considered the most uncomfortable time to visit Laramie.