In May, the weather in Kasigluk is typically cold. Average daily high temperature in May is about 9 degrees above zero. On average, Kasigluk has 12 cloudy, 11 rainy, 5 sunny, and 3 partly cloudy days in May. The rains are usually light. May as well as January, February, March, and April is considered the most uncomfortable time to visit Kasigluk.