It's currently being aired on the Hallmark channel every weekday at 12pm.

It has been airing for a couple of years now, in the UK at least. Try reigstering your email for the newsletter at the official site
http://www.usanetwork.com/series/monk/

You might also find an obscure little site called www.Google.com useful when you need factual info (I think Fanpop! is more for sharing opinions, if I may make so bold :))