December in Ely is the snowiest and the most freezing month of the year. In December, the weather in Ely is typically freezing. Average daily high temperature in December is about zero. On average, Ely has 14 partly cloudy, 11 sunny, 3 snowy, 2 rainy, and 1 cloudy day in December. The snowfalls are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Ely.