I went to Irvine CA to visit my uncle in early December years ago. I was walking around in a T shirt, and everyone else had on coats and sweaters, looking at me like I was crazy.
Not trying to get you any sympathy, but I can understand how you can become climatized to your enviorment.
I am assuming that you might not be able to use anything that produces a flame after you said it had to be electric. Here is a link on electric Parabolic Heaters.
Linky
Parabolic Heaters reflect radiant heat, and heat objects around it, including you. Unlike forced air space heaters, which might be okay for completely enclosed areas, you will find these better suited for the purpose you have in mind.
Another option if your situation allows it, is a patio heater. This is another radiant heater that utilizes the same propane tank as a gas grill.
I can sit outside comfortably in 35* weather without a jacket, and have approx. a 200 sq foot area heated to about 70*. This is as long as the wind is not blowing more than 10 to 15 mph.
I love my patio heater. You just need to make sure that you can place it at least two feet away from any vinyl siding, and have the same amount of clearance above it. They also make smaller versions that fit on top of a table.
I have taken mine inside the garage while skinning deer, and it works great there too. I just have a T shrt on in that case (just thought you garage smokers might like that).
Here is a link for patio heaters
linky. These sites are the first that I found, you might find better prices with a little searching.
I'm feeling lucky that I have the option to smoke inside. :thumbs:
Hope this helps.