In March, the weather in Vaughan is typically cold. Average daily high temperature in March is about 2 degrees above zero. On average, Vaughan has 15 cloudy, 7 rainy, 4 sunny, 3 partly cloudy, and 2 snowy days in March. The rains are usually moderate. March as well as April, October, November, and December is considered the most uncomfortable time to visit Vaughan.