I use the weather network app to see forecasts. It's closer than any other for weather around Toronto I've found but really only totally rely on it for hour by hour forecasts on the day/night I want to go out or need to know the upcoming weather for the next 24 hours. Beyond a day or two it's always a crap shoot.

Here it's telling me that there's going to be an arctic front moving in next week. I'll post back and let us know how accurate it was.
Brace for a lobe of Arctic air that will bring unseasonably cold temperatures and even a threat for SNOW to Ontario next week