In March, the weather in Jamestown is typically cold. Average daily high temperature in March is about 2 degrees above zero. On average, Jamestown has 12 partly cloudy, 7 sunny, 7 cloudy, 4 snowy, and 1 rainy day in March. The snowfalls are usually light. March as well as January, April, and November is considered the most uncomfortable time to visit Jamestown.