December weather forecast in Isa

In December, the weather in Isa is typically freezing. Average daily high temperature in December is about 20 degrees below zero. On average, Isa has 24 cloudy, 3 sunny, 2 snowy, and 2 partly cloudy days in December. The snowfalls are usually light. December as well as January, February, April, and October is considered the most uncomfortable time to visit Isa.