March in Pontarlier is the sunniest month of the year. In March, the weather in Pontarlier is typically warm. Average daily high temperature in March is about 9 degrees above zero. On average, Pontarlier has 12 rainy, 9 sunny, 6 partly cloudy, and 4 cloudy days in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Pontarlier.