^^ Hashim, if you don't mind driving to New England (Lakeville, CT -- about 7 hours from Toronto) there are still winter autocross days/classes being run at Lime Rock Park.
Winter Autocross Days | Lime Rock Park
(The dates listed on the above page aren't correct -- still two more classes and one more regular autocross event to run in winter 2017. Check out this link for ticket/event information: https://tickets.limerock.com/eventpe...es.asp?evt=115
They run the courses on their autocross track (not the main track). They purchased snow making equipment from a local ski slope so they can make snow/ice on the track as long as it's cold enough. I've been to this course several times -- although never on snow. I'm signed up for an upcoming class so hoping to get my G37x (with winter tires!) sliding around!