yeah. they do that on purpose. pigz. grrrrr........I sweated and bled to build them
they will be just fine. in fact they will probably like the rain. we hose ours down on hot days and they are like kids thru a sprinkler.
if you are expecting bad weather just heap on the hay and they will snuggle in. or sit out there and complain about the bad service
you're doing a great job!