In March, the weather in Bonners Ferry is typically cold. Average daily high temperature in March is about 5 degrees above zero. On average, Bonners Ferry has 8 cloudy, 7 rainy, 7 partly cloudy, 6 sunny, and 3 snowy 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 Bonners Ferry.