Currently we have a very stable weather situation over Scandinavia that have peristed for most of January. There is a so called "Omega Block" situation (en.wikipedia.org/wiki/Block_%28meteorology%29).
Because of the consistent wind directions the southernmost parts of Norway are getting lots precipitation, much more than normal, most of it as snow, while the rest of the country gets almost no precipitation at all. Several places in northern Norway have had zero precipitation so far in January. It looks like this will be the driest January for a hundred years in many regions, so it is an unusual situation indeed, but not unheard of. What is unusual is that it stays stable for so long.
Eventually the stable high pressure area over central Scandinavia will break down and the weather will change, but noone can tell when. According to the latest predictions not much will change in the next 7-10 days.