January in Florence is the coldest month of the year. In January, the weather in Florence is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Florence has 12 partly cloudy, 9 sunny, 5 rainy, and 5 cloudy days in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Florence.