December in Kasaan is the snowiest and the coldest month of the year. In December, the weather in Kasaan is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Kasaan has 19 rainy, 8 snowy, and 4 sunny days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Kasaan.