Obviously, they don't have to slide into the cozy genre. But what books do you cuddle up with during a thunderstorm, or your variable weather of choice? Personally, Becky Chambers has become one of my favorites. I also read LOTR when I need a "good guys doing the right thing just because it's the right thing to do".
It used to be Percy Jackson when I was a kid, but I think the re-reads have numbed it a bit.
I also like to read 'Never Let Me Go' whenever I wanna get grounded and appreciate the simple joys of life