May in Sackville is the rainiest and the cloudiest month of the year. In May, the weather in Sackville is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Sackville has 13 rainy, 7 partly cloudy, 6 cloudy, and 5 sunny days in May. The rains are usually heavy. May as well as March, April, October, and November is considered the most uncomfortable time to visit Sackville.