It is properly cold likes. Just check out this frosty bus shelter if you think I'm lying, which I am not.
Other than that, a free stuff to do in Edinburgh is occurring near you tonight (if you consider Hanover Street to be near, or merely just accessible).
It is an indie club night of sorts held downstairs in Jekyll and Hyde, where you will be dazzled by the mad DJing skillz of Marcus Forealius (who has been on that Eggheads programme) and DJ Very Friendly (who hasn't). Free food, free music, free entry - what's not to check out at least this one time and see what you reckon? Make yours a Club Sandwich from 8-12. You might enjoy yourself.