In March, the weather in North Sioux City is typically cold. Average daily high temperature in March is about 8 degrees above zero. On average, North Sioux City has 12 partly cloudy, 8 cloudy, 7 sunny, and 4 rainy days in March. The rains are usually light. March as well as February, April, November, and December is considered the most uncomfortable time to visit North Sioux City.