There is an awesome group in Las Vegas, NV - so big that they subdivided into 4 smaller groups, with the one overseeing them. It's called SHARE - look them up in Yahoo groups. If you can't find them try putting the periods in S.H.A.R.E.
I know there are more, again, try Yahoo groups and just type in homeschool + state (obviously the name of the state you want to look at).
I'm in Arizona, about an hour and a half south of Las Vegas. We don't have a strictly LDS group here, but I am one of the moderators of a local homeschool group that is 70% LDS. We don't get snow, though :(