October in Vaughan is the rainiest month of the year. In October, the weather in Vaughan is typically warm. Average daily high temperature in October is about 13 degrees above zero. On average, Vaughan has 16 rainy, 6 sunny, 5 partly cloudy, and 4 cloudy days in October. The rains are usually moderate. October as well as March, April, November, and December is considered the most uncomfortable time to visit Vaughan.