May in Blairgowrie is the sunniest month of the year. In May, the weather in Blairgowrie is typically warm. Average daily high temperature in May is about 12 degrees above zero. On average, Blairgowrie has 14 rainy, 7 partly cloudy, 6 sunny, and 4 cloudy days in May. The rains are usually moderate. May as well as January, February, March, and April is considered the most uncomfortable time to visit Blairgowrie.