May in Edson is the windiest month of the year. In May, the weather in Edson is typically warm. Average daily high temperature in May is about 14 degrees above zero. On average, Edson has 24 rainy, 5 sunny, 1 cloudy, and 1 partly cloudy day in May. The rains are usually moderate. May as well as April and June is considered the most uncomfortable time to visit Edson.