In March, the weather in Whistler is typically cold. Average daily high temperature in March is about 2 degrees above zero. On average, Whistler has 11 cloudy, 8 snowy, 5 sunny, 5 partly cloudy, and 2 rainy days in March. The snowfalls are usually heavy. March as well as February, April, May, and June is considered the most uncomfortable time to visit Whistler.