December in Moscow is the snowiest and the coldest month of the year. In December, the weather in Moscow is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Moscow has 9 partly cloudy, 7 cloudy, 6 rainy, 6 sunny, and 3 snowy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Moscow.