Hey fellow British Columbian! I grew up in a small hot rainy mill town on the West Coast of Vancouver Island, so moving to Saskatoon for undergrad three years ago was a climate/culture shock for sure! We're opposites for the culture, since for me Saskatoon was a humongous city. For anyone used to Vancouver, its going to seem pretty dinky probably. That being said, there's a tonne of stuff to do here. The nightlife is pretty decent if you know the right places (and depending what sort of things you like to do!). Dance was huge for me growing up so being able to head to the Longbranch and go twostepping/swing is awesome for me. But there are some more modern nightclubs and things as well.
I don't know if you are the sporty type, but USask has a really great intramural program which is awesome for physical activity in the winter. I've played on a few teams and learned to skate (if you have skates bring them....it's a very common winter activity and there are some great free public rinks) and curl (which is a staple of prairie life!). Your student card gets you in free to the PAC (physical activity complex) on campus which includes a gym, pool, fitness classes, indoor track and climbing wall. Any ladies out there looking for something fun and to get physically active I highly suggest checking out Club Mynx, it's a womens-only fitness club that offers all sorts of alternative fitness options including barre, aerial hoop and silks, and my personal favourite pole dancing!
In terms of the weather, it's a change for sure. I don't mean to sound depressing, but I find that eventually (after about -30) it's just cold and it all feels the same no matter what you do. Check out Costco, they carry great Canadian-made 100% Merino wool long underwear (the tops are my lifesaver!),and it's Costco so the prices are great. Make sure you get a good hat that will cover your ears, and just be careful & listen to weather warnings. All students at WCVM get a free locker so it's easy to dress warm to get to school and then dump your coat and everything. There's four Tim's and one Starbucks on campus so there's plenty of hot beverages available
Oh but don't make my first year mistake and totally leave out summer clothes.... obviously from year to year the weather varies but in my first year it was short weather until almost the end of October!
Hope some of this helps a bit