Tomatoes rotting – on the vine and in the home

My tomatoes seem to be rotting on the vine. I’m in the PNW and we’ve gotten a ton of rein, but I’m not sure why they otherwise are rotting on the plant, or what I can do.

My green tomatoes in the home have done the same.

My late season red tomatoes also look – funny. What is this brown, mottled stuff on the skin? It is not spreading.