January in Syracuse is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Syracuse is typically freezing. Average daily high temperature in January is about zero. On average, Syracuse has 12 cloudy, 10 snowy, 5 partly cloudy, 3 rainy, and 1 sunny day in January. The snowfalls are usually heavy. January as well as February, March, April, and October is considered the most uncomfortable time to visit Syracuse.