October in Toronto is the rainiest month of the year. In October, the weather in Toronto is typically warm. Average daily high temperature in October is about 13 degrees above zero. On average, Toronto has 13 rainy, 7 sunny, 6 partly cloudy, and 5 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 Toronto.