The snow is getting nearer!

On the way to school this morning, the snow was really obvious on the Torridons, and the snow clouds were hanging over the near distance.

Could be!
Who knows?
There's something due any day;
I will know right away,
Soon as it shows.
It may come cannonballing down through the sky,
Gleam in its eye,
Bright as a rose!


Do you recognise the lyrics?