May in Weno is the rainiest and the hottest month of the year. In May, the weather in Weno is typically hot. Average daily high temperature in May is about 28 degrees above zero. On average, Weno has 29 rainy, 1 cloudy, and 1 partly cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Weno.