Norway's the best country in the world.
In Canada it depends on where you live. I live in Ottawa so we do get a lot during storms and schools close when there's around 30cm on the roads but when it's lower they only cancel buses. They also get canceled if there's a lot of freezing rain but I've never seen a school get cancelled cause of it being too cold. I've gone in - 25 celsius and less before.

in 2008 the snow from every storm stayed on the ground until April and the piles by people's driveways were more than 2 and a half meters.
Oh and the Weather Network for Ottawa is calling for 25-35 centimeters on December 9th and 10th.
