In December, the weather in Abbadia San Salvatore is typically cold. Average daily high temperature in December is about 8 degrees above zero. On average, Abbadia San Salvatore has 13 rainy, 10 sunny, 6 partly cloudy, and 2 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and November is considered the most uncomfortable time to visit Abbadia San Salvatore.