What are the perfect conditions for snow?

ツLuStarツ asked: aah
the weather forecast said that there would be heavy snow where I live on Monday…
it’s now Friday and theres no snow… but lots of rain and a little bit of ice.
whats going on?
how cold does it have to be for it to snow?

thanks

Where can i watch itv national weather video clips that show idents that represent snow or snowy conditions?

Steven M asked: Snow or Snowy conditions that the ident represents