December in Healy Lake is the snowiest month of the year. In December, the weather in Healy Lake is typically freezing. Average daily high temperature in December is about 10 degrees below zero. On average, Healy Lake has 15 sunny, 14 partly cloudy, 1 snowy, and 1 cloudy day in December. The snowfalls are usually light. December as well as January, February, and November is considered the most uncomfortable time to visit Healy Lake.