In December, the weather in San Zeno di Montagna is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, San Zeno di Montagna has 11 partly cloudy, 10 sunny, 6 rainy, and 4 cloudy days in December. The rains are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit San Zeno di Montagna.