The hood itself has weatherstripping along the outer edge. From my experience it's been enough to keep water from getting to the fuses when is splashes onto the hood. It should be fine unless you're going to be getting in water that partially submerges the lower portion of the cargo hold.
The back of your passenger side fuse box isn't sealed worth a crap! The steam generated from any water crossing may eventually "melt" you main 40 amp fuse. There is a post on this within the last week.