Are you at an altitude more than 500 m from sea level or did you simply get so much snow that it hasn't had time to completely melt, yet? We had medium-heavy snowfall the day before yesterday and there is a bit left of it even today.
As far as I know, there is normally much more snow in Norway than Finland because the waters around Norway are warmer and give off more moisture as they never freeze over in the winter and because of the mountainous terrain.
It is around 50 maybe 70 meters above the sea level, I have around 3 km to the shoreline of Trondheimsfjorden... so the snow this time of the year is not normal :) Temperature is dropping below 0 during the night and the snow is not melting then. Yesterday we also had a lot of snow in the morning, most of it melt during the day but today - is a record. on my car in the morning easily 8 cm of fresh snow...
We got about 5-10 cm snow the day before yesterday. I'm about 70 m above sea level, about 80 km to the north of the Gulf of Finland at a latitude of about 61 N.
Trondheim is at about 63.5 N. But this type of weather is far from average for the time of year for both Lahti and Trondheim.