January in Radzymin is the snowiest and the coldest month of the year. In January, the weather in Radzymin is typically freezing. Average daily high temperature in January is about zero. On average, Radzymin has 13 cloudy, 8 partly cloudy, 5 rainy, 3 sunny, and 2 snowy days in January. The rains are usually light. January as well as February, March, April, and October is considered the most uncomfortable time to visit Radzymin.