I do Halloween reads all year! I also just really like horror in general so I tend to pick them up a lot. There are a lot of different subgenres of horror as well so it’s hard to recommend stuff without knowing your specific preferences, but here are some that I’ve read recently and liked.
If you want creepy occult you can try:
Silver Nitrate by Silvia Moreno-Garcia
Mister Magic by Kiersten White
If you want creepy atmospheric:
The Luminous Dead by Caitlin Starling
The Hollow Places by T Kingfisher
If you want messed up horror:
Ghost Eaters by Clay McLeod Chapman
If you want classic horror:
We Have Always Lived in the Castle by Shirley Jackson