In April, the weather in Vaughan is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Vaughan has 9 rainy, 8 sunny, 6 cloudy, 6 partly cloudy, and 1 snowy day in April. The rains are usually heavy. April as well as February, March, October, and November is considered the most uncomfortable time to visit Vaughan.