January in Lucerne is the coldest month of the year. In January, the weather in Lucerne is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Lucerne has 12 partly cloudy, 10 rainy, and 9 sunny days in January. The rains are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit Lucerne.