What about mail delivered to wrong house?

Our mailman lately has been making at least one wrong delivery per week. Well, the other day a package was wrongly delivered and my husband told me but left it out on the front porch. We forgot about it and didn’t bring it in.

Then there was a huge, huge rain storm last night. At literally 2:00 am we remembered and brought it in. The box was falling apart a bit (I did not open it) and it seems that whatever is in there was well packed with lots of plastic lining and that it is something light (hopefully not electronics or something).

I will drive it over to the right people (that’s how far wrong the delivery was) later today but I’m wondering if it were damaged, what would my liability be, if any?