December in Cedar Rapids is the snowiest and the windiest month of the year. In December, the weather in Cedar Rapids is typically freezing. Average daily high temperature in December is about 1 degree below zero. On average, Cedar Rapids has 16 cloudy, 7 snowy, 5 sunny, 2 partly cloudy, and 1 rainy day in December. The snowfalls are usually light. December as well as March, April, and November is considered the most uncomfortable time to visit Cedar Rapids.