I think Maxwell should try flying in it and if his bird still flies in a couple 2 or 3 weeks, the answer is yes.
The motors don't mind the water, it's the electronics inside which are allergic to water.
Put some tape over the vents and give it a shot. I've heard of some folks doing that. I would be concerned with overheating.
I have flown in drizzle a few times, no biggee. Things dry quite rapidly here in Wyoming.