Light rain may be the ticket @ times...
All I know is deer live in that stuff 24/7 and have to move sometime. Just gotta get close to them undetected and be there when they move. I'd say as long as its not a down pour they will move pretty good. Plus if it is overcast they will be a little more prone to move during shooting hours.Figured it would make a hard to find blood trail dissapear, haven't tried it so I can't say for sure.
Do deer move much in the rain?
I agree with this young lady.Rain makes it quiet and easy to get in and out of, not to mention keeps scent down as well! I love huntin in the rain!