December in Stirling is the windiest month of the year. In December, the weather in Stirling is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Stirling has 21 rainy, 6 cloudy, and 4 sunny days in December. The rains are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Stirling.