How is summer in canada?

Depends where you go, Canada is a big country. If you are going close to either the west or east Maritimes it can get pretty cold there, closer to around 10 degrees maybe (You should pack clothes for 3 different seasons if your going to the east since the temperature can change so much). But places like the prairies or southern Ontario can vary from 20-30. I recommend just going to a href="http://www.theweathernetwork.com/" rel="nofollow"http://www.theweathernetwork.com//a to get an overview of the weather to come since the weather has been pretty unusual. But generally the weather in the summer is the same so you'll be fine :)