Brrr. Although we do conduct outdoor weddings in winter, and have ventured to snowy spots like the Brickworks. Grange Park and Riverdale Park, and even the skating rink at Nathan Phillips, I DO RECOMMEND indoor locations for your small intimate micro-wedding. We need to have about 30 minutes for the wedding and signing, and it gets COLD, and we can't sign if it's wet.
SO! Your apartment, my apartment, your friend's condo event room are handy. Most restaurants will let you stand in a quiet corner at 4pm (before evening service) and hold a quick wedding, (don't say "wedding", say "private meeting" - they don't want to worry about confetti and champagne serving). But do ask about private 'snugs', small dinner party rooms at places like the Irish pubs on the Danforth.
But you can also rent a co-working room at various locations, like the Centre for Social Innovation on Spadina, etc. Just think, 'where could I hold a small meeting?', and you'll think of places you could hold a small wedding. Contact me at marybeaty (at) gmail (dot) com, and I can offer suggestions. Happy planning!