In article ,
Col writes:
snip
So does that mean that on average snow falls in central
London twice in December?
I know I'm twisting things a bit because snow in early
December is rarer than later in the month, but there are
31 days in the month.....

Twice in the month probably isn't too far out. Don't forget that it only
needs a single flake to be observed.
--
John Hall

"Whenever people agree with me I always feel I must be wrong."
Oscar Wilde