January in Belgrade is the snowiest and the coldest month of the year. In January, the weather in Belgrade is typically cold. Average daily high temperature in January is about 3 degrees above zero. On average, Belgrade has 12 rainy, 11 cloudy, 6 sunny, 1 snowy, and 1 partly cloudy day in January. The rains are usually moderate. January as well as February, March, and December is considered the most uncomfortable time to visit Belgrade.