Pipeline, not knowing where you are, but up here, I go to the same store that I purchased my goose jacket. You can pick up thermo lined leather gloves, that do not hinder you at all. for minus 50 they are great, keeping in mind we get to minus 30 and 35 temps where I live.
The weather in fairbanks rarely reaches the temperatures you indicate. The January average in seldom less than 20 below and January is usually the coldest month. Any decent outfitter in Fairbanks should have lots of gloves that will fit your needs.
First of all it is a cold snap, it won't last.
Second, unless you are working outside all day then you can use a variety of gloves or mittens, add chemical heat packs or use common sense and go inside when your hands start to freeze.
You just got here, trust me I live here.
Everyone has a different way of dressing for the cold. Why not go on over to Big Ray's or Prospector (working woman/mans style arctic wear). Visit Wooly Rhino or Beaver Sports (more gear junkie style) and see what they carry that you like. They also live here and know what works.
Gloves are never as warm as mittens. But you can layer your hands (like you should be layering your other clothing) wear gloves inside mitts. Take mitts off when you need to use fingers.
Also circulation helps, and if you smoke cigarettes your hands will be colder then a non-smoker (smoking has a really negative effect on your circulation) NO Cotton, never, no way, period.
If you need to keep all your fingers and are going to be outside all day then Beaver Mitts. Alaska Raw Fur Company.
It may get -50, but probably not much lower with this cold spell. Mittens are much warmer than gloves because your fingers are together. Unless you will be working or spending much time outside, you probably don't need ones that are super heavy. Mine are thick wool and I have leather outer mitts for over them if working outside so they don't rip. I also have a pair of thinsulate ski mittens I sometimes wear. The local Fairbanks outdoor clothing stores like Big Ray's (downtown) or Prospector (on south Cushman) can give you better advice than national box stores.
It can depend on how long your hands will be exposed. For prolonged exposure you may need something like these:
http://www.campmor.com/outdoor/gear/Prod...
http://www.campmor.com/outdoor/gear/Prod...
Dexterity is not likely to be great. You don't want to work barehanded in subzero cold. Using gloveliners and a handwarmer pack can allow you to do fine work for about a minute or two in severe cold.
If you are able to have your hands in your pockets most of the time, something like this, combined with glove liners could work
http://www.cabelas.com/product/Cabelas-B...
Supplement with handwarmer packs if needed.
If in doubt about size, choose the larger size to accommodate liners and handwarmers.
