Oshawa
Oh, so it's Oshawa you're going. That's got to be Ontario, as in Canada. I spend time in Toronto. Oshawa's not far away from GTA. Climate is similar to Maine. At 6:53 AM it's 62 degrees. Tonight it's supposed to go down to 48.
In the summer we call that "sleeping weather". You leave the windows open and pull on a blanket. You sleep nice and cozy.
This is not the tropics! Topher, you may be in danger! Make sure you bring your Uggs. Or better yet, stop by LL Bean in Freeport, Maine. They've got a lot of great "Cottage Wear" items that will keep you warm.
Have fun in Oshawa/TO. Toronto is a great town. Good coffee too.
Mako