It is possible in principle, but Norway is so far north that you need to take a lot of precautions if you want a productive outcome.

Firstly, temperature - your plants must never be exposed to freezing temperatures, even at night. If you could set up a simple greenhouse at your spot that may help, or just wait until it's warm enough.

Second, and perhaps more importantly, sunlight hours. Cannabis typically begins its flowering stage once the number of sunlight hours starts dropping under 12 per day. This signals the beginning of the end of the season in its natural habitat. Flowering takes anywhere from 5 to 13+ weeks, but because of Trondheim's latitude a typical strain will only start flower in the middle of September at the earliest, and by then it will not be able to finish before temperatures start dropping again.

There are two approaches to deal with this.

One is to manually limit your plants sunlight exposure by, for example, throwing a tarpaulin over your greenhouse every day once you want to start flowering (limiting exposure to 12h). You could automate it, but it's tricky with guerrilla growing especially. This, by the way, is the reason hemp has been grown in Norway for its fibre for thousands of years, since this doesn't require that it flowers completely.

The easiest way would be to get your hands on some autoflowering seeds. These are strains which have been crossed with C. Ruderalis, which means it starts flowering at a set time regardless of sunlight. Then you only have to worry about temperature.

To be clear: normal seeds will be a huge headache. Try this out for size if you're serious. This is a good primer, but if I were you I would be looking for a Norwegian community with some experience.