I've noticed this after the last update, and I just tested without any mods.
For some reason I can't forage in Nordhaven.
In my OG save where I realized this, I tried by the water in Gammelvik, on her lot, and traveled to the big empty lot in Iverstad. It was Fall in my game.
In a NEW save, no mods, I still have this issue and it's Summer.
I'm on PC, on the newest update, and have all the packs.
I have no clue if this happens in any other worlds.