Things I’ve been listening on very heavy rotation this autumn has been pretty much Swedish. There’s been a lot — understatement — of Ossler since his music is by far the best in ages. (Thåström live comes close but…) The thing is, he sings in Swedish so that might not be your cup of tea. I’ll gladly post something by him later if you want though.
So the other thing I’ve had on repeat is First Aid Kit’s The Lion’s Roar. Which is this song. And it’s great too of course, in a completely different way. It too embodies aspects which I associate with autumn.