Your plant is kalanchoe blossfeldiana. It will naturally bloom in late winter/early spring. Growers manipulate the amount of light at other times to cause it to bloom. They know we're much more likely to buy a blooming plant. It comes in many colors.

Amy, the only other thing in that bed that would get that tall would the the aretemesia, and that is not what that is..............could it possibly be just a weed???

Difference between nighttime and daytime temps shouldn't be problem; even 20's is pretty warm (I am assuming that is C). My daytimes are in 30'ties C, and nights drop to 12*C sometimes - I wouldn't mind if that was every night! :) Cooler nights are actually pretty good for plants. I am north of Toronto, On, and weather is quite similar to yours in Montreal. Pls. do not use sand for potted succulents regarding what you read on some 'blogs'. Yes, it could be used for some, but only if you really know your plants. It is best if you just don't use it. Grit is great addition or pumice; but if you don't have (or not easy available), use lots of coarse perlite. If you mix perlite 50/50 with the Cactus & Succulent soil, that will be quite an improvement. If you can, keep plants outside. But make sure you acclimatize it very slowly, since it is very etiolated and most like very weak. You need to get it into better light and water properly - sparsely is not proper for succulents. If you pot it into well draining mix, you can water thoroughly when needed. Pot seems to be very large for your plant. I would repot it into smaller pot. Etiolated plant will not 'revert' even if you give it much better conditions. If my plant, I would trim/prune it extensively. If you want some ideas, pls. ask. BTW, here is Cacti and Succulents Forum if you are interested to read more about succulents...

welcome to the forums... is there drainage in that pot??? i think.. but am not sure.. its a plant that may not like to be sopping wet all the time.. so if there is no drainage.. it might be a problem in the future ... just fyi .... there is a houseplant forum where you might get further help with care .... now that you have the ID .... also.. if you have a couple.. as you seem to say.. you can probably grow them outdoors for summer ... depending where you are ... i mean really .. how many do you need in the house.. lol ... and then late in summer.. you can root up some more cuttings ... and give them as xmas gifts ... the gift that keeps on giving .... ken