May in Saint-Gaudens is the rainiest month of the year. In May, the weather in Saint-Gaudens is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Saint-Gaudens has 16 rainy, 6 sunny, 5 partly cloudy, and 4 cloudy days in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Saint-Gaudens.