Weather in Toronto The weather in Toronto is inconsistent throughout the year. During the spring and autumn the days are fresh with temperatures varying between 10C and 20C. However, the summers are usually very warm with temperatures ranging between 25C and 35C. During the winter the temperature lowers to about 0C and there are usually snow storms. Toronto Guide | Toronto transport Leave a Reply Cancel Reply Your email address will not be published.CommentName* Email* Website Save my name, email, and website in this browser for the next time I comment.