May in Claremont is the rainiest month of the year. In May, the weather in Claremont is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, Claremont has 17 rainy, 6 sunny, 6 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 Claremont.